CN214342293U

CN214342293U - Mouth and nose airflow sensing device and monitoring system

Info

Publication number: CN214342293U
Application number: CN202023031848.0U
Authority: CN
Inventors: 李�赫; 陈浩; 夏杰; 吴齐齐
Original assignee: Hangzhou Damu Medical Technology Co ltd
Current assignee: Hangzhou Damu Medical Technology Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-10-08
Anticipated expiration: 2030-12-16

Abstract

The utility model relates to the technical field of medical equipment, more specifically say, relate to a mouth nose air current sensing device, including nasal catheter, nasal branch pipe and line type temperature sensor, the nasal catheter with nasal branch pipe UNICOM, on the nasal branch pipe with the position that the nasal catheter is relative is equipped with two installation pipes, line type temperature sensor's both ends are passed two respectively the installation pipe makes line type temperature sensor is located on the nasal catheter relative position. The utility model provides an oronasal airflow sensing device can avoid the short circuit risk that the circuit overlap joint caused, simple structure moreover, and easy production and processing easily promotes on a large scale. The utility model also provides a monitoring system, will oronasal airflow sensing device is connected with monitoring devices, breathes to the nose simultaneously and breathes with the mouth and monitor, and data acquisition is more comprehensive, has reduced the emergence of leaking the judgement to the at utmost.

Description

Mouth and nose airflow sensing device and monitoring system

Technical Field

The utility model relates to a medical apparatus technical field, more specifically say, relate to a mouth nose air current sensing device and monitoring system.

Background

The respiratory rate and tidal volume of a human body are important indexes for respiratory monitoring, and two main current ways for measuring the respiratory rate and tidal volume of the human body are pressure type and thermal type at present. The pressure type is used for measuring gas pressure and exhaled gas quantity when a human body exhales, the pressure times measured in unit time are breathing frequency, and the exhaled gas quantity measured in a single time is tidal volume; the thermosensitive type is to measure the temperature change between expiration and inspiration of a human body, the temperature change frequency measured in unit time is the respiration frequency, the temperature change duration measured in a single time is calculated to obtain the tidal volume.

The pressure type measuring mode is generally realized by adopting a nasal oxygen tube, one side of the nasal oxygen tube is fixed at the position of a nostril of a human body, the other side of the nasal oxygen tube is connected with equipment, and gas exhaled by the human body is transmitted to monitoring equipment through a pipeline during measurement, so that the respiratory frequency and the tidal volume are obtained. The temperature-sensitive measuring method generally adopts one or more temperature-sensitive metals to package a temperature-sensitive probe, fixes the mouth and nose of a human body, converts the temperature change of the temperature-sensitive probe into potential change when the human body breathes, and transmits an electric signal to monitoring equipment so as to obtain the respiratory rate and the tidal volume. The sensor used for thermosensitive measurement has large volume, complex fixing mode and limited space of mouth and nose of human body, so that the pressure type and thermosensitive measurement modes can not be realized simultaneously.

In order to solve the above problems, a detection device capable of simultaneously acquiring nasal respiration data and oral respiration data is currently available, as shown in fig. 1 and 2, the detection device comprises a nasal branch tube 10, a nasal catheter 20, a three-way adapter 30 and a nasal main tube 40, wherein the two nasal catheters 20 are respectively communicated with the nasal branch tube 10, respectively correspond to two nostrils of a person, and are used for acquiring nasal respiration data; the nasal branch tube 10 is communicated with the nasal main tube 40 through a three-way adapter 30; the opposite position of the nasal catheter 20 is also provided with a mounting catheter 50 communicated with the nasal branch tube 10, and the silica gel line 60 passes through the mounting catheter 50 and forms a hairpin structure at the front end of the mounting catheter 50 for collecting the mouth breathing data. In order to prevent the silicone wire 60 from overlapping in the installation guide tube 50 and causing short circuit, an insulator 80 is further fixed in the installation guide tube. When the nasal cannula is used, the nasal branch tubes are arranged in the nostrils of a person to collect nasal respiration data, and the silica gel wires are arranged at the front end of the mouth of the person to collect the mouth respiration data. Although the above detection device can detect nasal breathing and oral breathing data simultaneously, the following disadvantages still exist: (1) the insulator has the risk of falling off, and once the insulator falls off, the short circuit of the silica gel line can be caused, and the breath data of the mouth cannot be acquired; (2) if the installation conduit and the insulator are manufactured in an integrated forming mode, the production process is complicated, the production cost is increased, and the popularization is not facilitated.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a mouth-nose airflow sensing device, which can solve the above technical problems.

Another object of the utility model is to provide a monitoring system can accurately acquire respiratory frequency and tidal volume information according to the respiratory data that oronasal airflow sensing device gathered.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a mouth nose air current sensing device, includes nasal catheter, nasal branch pipe and line type temperature sensor, the nasal catheter with nasal branch pipe UNICOM, on the nasal branch pipe with the relative position of nasal catheter is equipped with two installation pipes, two are passed respectively at line type temperature sensor's both ends installation pipe makes line type temperature sensor is located on the nasal catheter relative position.

Further, the line type temperature sensor forms a hairpin type structure at the front end of the installation guide.

Further, the mounting conduit is in communication with the nasal branch.

Further, the other end of the connecting end of the installation conduit and the nasal branch pipe forms a sealing end.

Further, the mounting tube forms a sealed end with the nasal branch connection end.

Furthermore, the side wall of the installation conduit is provided with an opening for the linear temperature sensor to penetrate through.

Furthermore, the installation catheter is arranged at the position opposite to the nasal catheter through a hollow connecting piece, and the installation catheter is arranged on the outer side surface of the hollow connecting piece; the hollow connecting piece is sleeved outside the nasal branch pipe and can rotate in the circumferential direction of the nasal branch pipe.

Furthermore, the whole hollow connecting piece is of a tubular structure with two open ends, the middle part of the outer side surface is provided with the installation catheter, and the opposite side of the connection side of the installation catheter is provided with a through hole for the nasal catheter to pass through.

Furthermore, the nasal branch tube fixing device further comprises a fixing sleeve, two ends of the nasal branch tube penetrate through the fixing sleeve to form a closed annular structure, and the fixing sleeve can slide on the nasal branch tube to adjust the circumference of the annular structure.

The utility model provides a monitoring system, includes oronasal airflow sensing device and monitoring devices, oronasal airflow sensing device with monitoring devices connects, oronasal airflow sensing device is used for gathering oronasal breathing data, monitoring devices basis oronasal breathing data obtains respiratory frequency and tidal volume information.

The utility model provides a mouth nose air current sensing device, including nasal catheter, nasal branch pipe and line type temperature sensor, the nasal catheter with nasal branch pipe UNICOM, on the nasal branch pipe with the relative position of nasal catheter is equipped with two installation pipes, two are passed respectively at line type temperature sensor's both ends installation pipe makes line type temperature sensor is located on the nasal catheter relative position. When the nasal branch tube is used, the nasal branch tube is arranged at the position of the nostril of a human body and used for collecting nasal respiration data, and the temperature sensor is approximately positioned at the position in front of the mouth and used for collecting the oral respiration data.

The utility model provides an oronasal airflow sensing device is located the relative one side of nasal catheter with line type temperature sensor through two installation pipes, and two installation pipes keep apart line type temperature sensor's both ends circuit each other, can avoid the short circuit risk that the circuit overlap joint caused, simple structure moreover, easy production and processing easily promotes on a large scale.

The utility model also provides a monitoring system, include oronasal airflow sensing device and monitoring devices. The conduit in the oral-nasal airflow sensing device is connected with the monitoring device, and transmits the gas pressure and the exhaled gas volume of the human body during exhalation to the monitoring device, so that the respiratory frequency and tidal volume information of nasal respiration are acquired. The temperature sensor in the oronasal airflow sensing device is connected with the monitoring device, and transmits the temperature change information between expiration and inspiration of a human body to the monitoring device, so that the respiratory frequency and tidal volume information of the oronasal airflow sensing device are acquired. The monitoring system monitors the nasal respiration and the oral respiration simultaneously, the data acquisition is more comprehensive, the occurrence of missing judgment is reduced to the greatest extent, and the data obtained by the two measurement modes can be mutually verified, so that the occurrence of erroneous judgment is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a detection device in the prior art;

FIG. 2 is a schematic view of a prior art insulator;

FIG. 3 is a schematic structural view of an oronasal airflow sensing device according to a first embodiment of the present invention;

FIG. 4 is a schematic view of the first embodiment of the present invention showing the use of the oronasal airflow sensing device;

FIG. 5 is a schematic view of a second embodiment of the present invention illustrating the structure of the installation duct;

fig. 6 is a schematic view of a structure of a mounting pipe according to a third embodiment of the present invention.

Wherein the reference numbers in the figures are as follows:

10-nasal branch pipe, 20-nasal catheter, 30-three-way adapter, 40-nasal main pipe, 50-installation catheter, 60-linear temperature sensor, 70-fixing sleeve and 80-insulator.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, fig. 1 is a schematic structural view of an oronasal airflow sensing device with a single-pipe installation branch pipe according to a first embodiment of the present invention; FIG. 2 is a schematic structural view of an oronasal airflow sensing device with a double-pipe branch pipe according to a first embodiment of the present invention; FIG. 3 is a schematic view of the oral-nasal airflow sensor of the present invention; FIG. 4 is a schematic view of an oronasal airflow sensing device with a single-pipe branch pipe according to a second embodiment of the present invention; FIG. 5 is an enlarged view of a portion of the structure of FIG. 4; fig. 6 is a schematic structural view of an oronasal airflow sensing device of a double-pipe installation branch pipe in a second embodiment of the present invention.

As shown in fig. 3, in a first embodiment of the present invention, an oronasal airflow sensing device is provided, which comprises a nasal cannula 20, a nasal branch tube 10 and a linear temperature sensor 60. The nasal cannula 20 is in communication with the nasal prongs 10. Two mounting tubes 50 are provided on the nasal branch tube 10 at positions opposite to the nasal tubes 20, and both ends of the linear temperature sensor 60 are respectively passed through the two mounting tubes 50, so that the linear temperature sensor 60 is positioned at a position opposite to the nasal tubes 20.

The material of nasal catheter 20 and nasal branch pipe 10 do not do specifically and restrict here, the hose that preferred medical silica gel made, and not only low cost to can make oral nasal airflow sensing device into disposable apparatus, guarantee user's safety in utilization, when using moreover, user experience is better.

The linear temperature sensor 60 may be a linear thermistor or a thermocouple. The thermistor is made of a semiconductor material with the resistivity changing with the temperature, and the temperature change can be measured according to the resistance change. The thermistor has the advantages of large temperature coefficient, high sensitivity, high temperature response speed, small volume and simple structure, and is very suitable for dynamic measurement. The thermocouple is a closed loop made of two different metal wires, when the temperature difference of nodes at two ends is given, thermoelectromotive force which is in direct proportion to the temperature difference is generated, the thermoelectromotive force only depends on the temperature difference, and the thermoelectromotive force is independent of the length and the thickness of a conductor, and the change of the electromotive force can indicate the change of the temperature. The thermocouple also has the advantages of small volume, simple structure and the like.

In this embodiment, the linear temperature sensor 60 is a thermocouple wire, two ends of the thermocouple wire respectively penetrate through the two mounting tubes 50, and a hairpin structure is formed at the front end of the mounting tube 50. By adjusting the length of the hairpin structure exposing the mount conduit 50, the positional relationship of the line type temperature sensor 60 and the mouth of the human body can be adjusted.

In this embodiment, the mounting tube 50 is a hollow tubular structure and is integrally formed with the nasal prongs 10 and is disposed at a position opposite to the nasal prongs 20. The relative position described herein is not limited to the 180 ° angle between the installation conduit 50 and the nasal catheter 20, and as long as the linear temperature sensor 60 can be located at approximately the front end of the mouth of the human body during the use process, the installation conduit 50 is considered to be located at the relative position of the nasal catheter 20, and therefore, it is within the scope of the relative position that the angle between the installation conduit 50 and the nasal catheter 20 is less than 180 °.

The end of the installation conduit 50 connected with the nasal branch tube 10 is a connection end. The connecting end of the mounting tube 50 may be in the form of an opening, i.e. the mounting tube 50 communicates with the nasal prongs 10.

In this embodiment, the tail end of the nasal branch tube 10 may further be provided with a three-way adapter 30 to converge two airflows into one, which is convenient for connection of a monitoring device. At the moment, the airflow generated by the nasal respiration can also pass through the thermocouple wire, so that the temperature change of the nasal respiration between expiration and inspiration is monitored, and the nasal respiration related data is monitored and acquired by utilizing a pressure type mode and a heat sensitive type mode.

In this embodiment, a retaining sleeve 70 is fitted over the nasal prongs 10. The two ends of the nasal prongs 10 are passed through the harness 70 to form a closed loop, and the harness 70 can be slid over the nasal prongs 10 to adjust the circumference of the loop. As shown in fig. 4, when in use, the fixing sleeve 70 is used to adjust the circumference of the ring structure to suit different users, and the ring structure formed by the nasal branch tube 10 uses the ears and the chin at two sides as fixing supporting points, so that the oronasal airflow sensing device can be stably fixed on the face of the user all the time when in use, and the user cannot easily slip off even in sleep.

When the oral and nasal airflow sensing device disclosed by the embodiment is used, the nasal catheter 20 is arranged at a nostril of a human body, airflow generated by nasal respiration enters the nasal branch tube 10 through the nasal catheter 20, and then is finally guided into the monitoring equipment through the nasal branch tube 10 to perform corresponding calculation, so that information such as respiratory frequency and tidal volume is acquired. The linear temperature sensor 60 is disposed at a position opposite to the nasal cannula 20, and is located approximately in front of the mouth of the user when in use, the temperature of the airflow generated during mouth breathing changes through the linear temperature sensor 60, and the linear temperature sensor 60 transmits the temperature information to the monitoring device for corresponding calculation, so as to obtain information such as respiratory rate and tidal volume.

Referring to fig. 5, in a second embodiment of the present invention, an oronasal airflow sensing device is provided, which is largely identical to the structure of the oronasal airflow sensing device in the first embodiment, and reference is made to the description of the related structure in the first embodiment. However, in consideration of the air tightness of the nasal branch tube 10, in the present embodiment, the other end of the installation tube 50 opposite to the connection end is configured as a sealed end, so that the inside of the nasal branch tube 10 is isolated from the outside air, and the air tightness of the inside of the nasal branch tube 10 is ensured. The manner of forming the sealed end is various, for example, the other end of the installation pipe 50 opposite to the connection end is first produced as a closed end, and then a through hole having a diameter smaller than the diameter of the thermocouple wire is formed at the closed end, so that when the thermocouple wire passes through the through hole, an interference fit is formed, thereby ensuring airtightness of the inside.

In a third embodiment of the invention, as shown in fig. 6, another oronasal airflow sensing device is provided, which is largely identical to the oronasal airflow sensing device of the first embodiment, and reference is made to the description of the first embodiment with respect to the relevant structure. The oronasal airflow sensing device in this embodiment is mainly modified at the junction of the installation conduit 50 and the nasal branch tube 10, and in this embodiment, the linear temperature sensor 60 is a linear thermistor.

The line type thermistor includes a thermistor and a pair of wires, one end of which is connected to the thermistor, and the other ends of which are connected to the monitoring device through the mounting tube 50, respectively, so as to transmit temperature data to the monitoring device, the thermistor being positioned at the front end of the mounting tube 50.

In this embodiment, the connection end of the installation tube 50 and the nasal branch tube 10 is configured as a sealed end, and an opening through which a wire of the linear thermistor passes is opened on the side wall of the installation tube 50, so that the airtightness of the nasal branch tube 10 in this embodiment is ensured.

In a fourth embodiment of the present invention, another oronasal airflow sensing device is provided. In this embodiment, the mounting tube 50 is not directly connected to the nasal prongs 10, but is mounted to the nasal prongs 10 at a location opposite the nasal prongs 20 via a hollow connector. The nose branch pipe 10 outside is located to the cavity connecting piece cover, and can rotate on the circumference of nose branch pipe 10, and on the lateral surface of cavity connecting piece was located to installation pipe 50, when the cavity connecting piece rotated for nose branch pipe 10, installation pipe 50 also rotated thereupon to can be used for adjusting the relative position of linear temperature sensor 60 and human oral area, more be favorable to data acquisition.

Specifically, the hollow connecting piece is integrally a tubular structure with two open ends, the middle part of the outer side surface is provided with a mounting conduit 50, and the opposite side of the connecting side of the mounting conduit 50 is provided with a through hole for the nasal catheter 20 to pass through. The through hole may be a large through hole for passing the two nasal catheters 20 at the same time, or two smaller through holes for passing the two nasal catheters 20 respectively. The through hole extends circumferentially along the hollow connector, leaving space for the nasal prongs 20 to rotate without interference, at which time the nasal prongs 20 also act as a stop for the rotation of the hollow connector.

The utility model also provides a detecting system, including aforementioned oronasal airflow sensing device and monitoring devices. The mouth and nose airflow sensing device is connected with the monitoring device, and transmits the gas pressure and the exhaled gas volume of the human nose during exhalation to the monitoring device, so that the respiratory frequency and tidal volume information of the nose respiration are acquired. A linear temperature sensor in the oral-nasal airflow sensing device is connected with a monitoring device, and transmits temperature change information between expiration and inspiration of a human body to the monitoring device, so that respiratory frequency and tidal volume information of oral respiration are acquired.

The utility model provides a detecting system can gather nose breathing and mouth breathing data simultaneously, and data are more comprehensive, can the proofreading each other between the data moreover, can in time discover the mistake and leak, reduce the emergence of missing judgement, erroneous judgement. Of course, only the nasal respiration data or the oral respiration data may be collected according to specific needs, for example, only the nasal respiration data may be collected when the thermistor performance is attenuated under a high temperature condition.

In addition, when installation pipe and nasal branch UNICOM, according to concrete needs, can also utilize pressure type and two kinds of modes of temperature sensing formula simultaneously monitoring, acquire the relevant data information of nose breathing, make the relevant data of nose breathing that acquire abundanter, the monitoring result is more accurate.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a mouth nose air current sensing device, its characterized in that, includes nasal catheter, nasal branch pipe and line type temperature sensor, the nasal catheter with nasal branch pipe UNICOM, on the nasal branch pipe with the relative position of nasal catheter is equipped with two installation pipes, two are passed respectively at line type temperature sensor's both ends installation pipe makes line type temperature sensor is located on the nasal catheter relative position.

2. The oronasal airflow sensing device of claim 1 wherein said linear temperature sensor forms a hairpin-type structure at the forward end of said mounting conduit.

3. The oronasal airflow sensing device of claim 1 wherein the mounting conduit is in communication with the nasal branch.

4. The oronasal airflow sensing device of claim 3 wherein the mounting conduit forms a sealed end with the other end of the nasal branch connection end.

5. The oronasal airflow sensing device of claim 1 wherein the mounting conduit forms a sealed end with the nasal branch connection end.

6. The oronasal airflow sensing device of claim 5 wherein the side wall of the mounting conduit is provided with an opening through which the linear temperature sensor passes.

7. The oronasal airflow sensing device of claim 1 wherein the mounting conduits are disposed opposite the nasal conduits by hollow connectors, the mounting conduits being disposed on the outside of the hollow connectors; the hollow connecting piece is sleeved outside the nasal branch pipe and can rotate in the circumferential direction of the nasal branch pipe.

8. The oronasal airflow sensing device of claim 7 wherein the hollow connector is a tubular structure with two open ends, the mounting tube is disposed in the middle of the outer side, and a through hole for the nasal tube to pass through is disposed on the opposite side of the connecting side of the mounting tube.

9. The oronasal airflow sensing device of any one of claims 1 to 8 further comprising a harness through which both ends of the nasal prongs form a closed loop and which is slidable over the nasal prongs to adjust the circumference of the loop.

10. A monitoring system comprising the oronasal airflow sensing device and the monitoring device as claimed in any one of claims 1 to 9, wherein the oronasal airflow sensing device is connected with the monitoring device, the oronasal airflow sensing device is used for collecting oronasal respiration data, and the monitoring device obtains respiratory rate and tidal volume information according to the oronasal respiration data.