CN107320826B

CN107320826B - Respiratory device for auxiliary treatment

Info

Publication number: CN107320826B
Application number: CN201710748715.9A
Authority: CN
Inventors: 王凤卿
Original assignee: Peking University Shenzhen Hospital
Current assignee: Peking University Shenzhen Hospital
Priority date: 2017-08-28
Filing date: 2017-08-28
Publication date: 2020-09-15
Anticipated expiration: 2037-08-28
Also published as: CN107320826A

Abstract

The invention discloses an auxiliary treatment breathing device which comprises an oxygen pipeline, a controller, an air pipeline, a communicating piece and an oxygen conveying pipe, wherein one end of the oxygen pipeline is an oxygen inlet, the oxygen pipeline is provided with a pressure sensor, and the pressure sensor is used for monitoring the pressure at the oxygen inlet; the controller is used for receiving the pressure signal of the pressure sensor, comparing the pressure signal with a preset pressure value and then sending a control signal; one end of the air pipeline is an air inlet, a turbo fan for receiving the pressure signal is arranged on the air pipeline, and the turbo fan is used for sucking air to the external environment through the air inlet and adjusting the rotating speed according to the pressure signal; the communicating piece is respectively communicated with the oxygen pipeline, the air pipeline and the oxygen conveying pipe. The invention automatically controls the rotating speed of the turbine fan through the controller, and further controls the flow and the pressure of the mixed gas in the oxygen conveying pipe to be in a required range.

Description

Respiratory device for auxiliary treatment

Technical Field

The invention relates to the technical field of medical instruments, in particular to a respiratory device for adjuvant therapy.

Background

Conventional breathing apparatuses are used to deliver a suitable mixture of oxygen and air to a patient in order to, for example, fully artificially breathe the patient and/or at least partially support his breathing. However, in conventional breathing apparatuses there is always a need for a compressed air supply which has to be provided by means of a pneumatic bottle or a stationary compressed air supply system, for example in a hospital. The conventional breathing apparatus is therefore not intended for mobile use, i.e. it is not possible to have a pneumatic bottle or a compressed air supply system, so that the possibilities of use of the conventional breathing apparatus are also limited to stationary operation in this sense.

Disclosure of Invention

The invention aims to at least solve the defects in the prior art to a certain extent and provides a respiratory device for adjuvant therapy.

In order to achieve the above object, the present invention provides an assisted therapy breathing apparatus, including:

the device comprises an oxygen pipeline, a pressure sensor and a controller, wherein one end of the oxygen pipeline is an oxygen inlet, the oxygen pipeline is provided with the pressure sensor, and the pressure sensor is used for monitoring the pressure at the oxygen inlet;

the controller is used for receiving the pressure signal of the pressure sensor, comparing the pressure signal with a preset pressure value and then sending a control signal;

the air pipeline is provided with an air inlet at one end and a turbo fan for receiving the pressure signal, and the turbo fan is used for sucking air to the external environment through the air inlet and adjusting the rotating speed according to the pressure signal;

the communicating piece is internally provided with a mixing cavity, the mixing cavity is respectively communicated with the other ends of the air pipeline and the oxygen pipeline, and is used for mixing oxygen supplied by the oxygen pipeline and air sucked by the turbo fan and outputting the mixed gas through an output interface;

one end of the oxygen therapy pipe is inserted on the output interface of the communicating piece, and the other end of the oxygen therapy pipe is connected with a breathing mask.

Preferably, the communication member includes:

the oxygen pipeline and the air pipeline are communicated to two opposite sides of the side wall of the main body respectively;

the connecting pipe coaxially penetrates through the main body, the inner end of the connecting pipe penetrates out of the open end of the main body, and the outer end of the connecting pipe penetrates out of the closed end of the main body to form the output interface;

the edge of the elastic diaphragm is hermetically connected with the open end of the main body, and the middle part of the elastic diaphragm is pressed against the inner end of the connecting pipe, so that the elastic diaphragm, the inner wall of the main body and the outer wall of the connecting pipe form an annular mixing cavity together;

when the oxygen supplied by the oxygen line and the air sucked from the turbo fan enter the mixing chamber, the formed mixed gas can enter from the inner end of the connecting pipe by pushing the elastic diaphragm.

Preferably, the communicating member further comprises an end cap, and the cap sleeved by the end cap is arranged at the open end of the main body to fix the elastic diaphragm between the main body and the end cap.

Preferably, an O-ring is disposed between the end cap and the main body, and the O-ring is fitted over the outer wall of the open end of the main body to fix the elastic diaphragm to the main body.

Preferably, the side wall of the end cover is further provided with a plurality of through holes.

Preferably, the two opposite sides of the outer wall of the main body are respectively provided with an oxygen interface and an air interface which are communicated with the annular mixing cavity, the other end of the oxygen pipeline is connected to the oxygen interface in an inserting mode, and the other end of the air pipeline is connected to the air interface in an inserting mode.

Preferably, the air inlet directions of the oxygen interface and the air interface are respectively tangent to the annular mixing cavity.

Preferably, the air pipeline further comprises a filter, and the filter comprises a shell and a filter element arranged in the shell;

the shell is provided with a first end and a second end which are opposite to each other, a plurality of air inlet holes are formed in the first end to form the air inlet, and the second end is communicated with the end part of the air pipeline;

the filter core includes first foam layer, first filter core layer, the layer that absorbs water, second foam layer and the second filter core layer that sets gradually by first end to second end direction.

Preferably, the oxygen pipeline and the air pipeline are respectively provided with a one-way valve, and the one-way valve on the air pipeline is positioned between the turbo fan and the communicating piece and allows air to flow from the turbo fan to the communicating piece.

The invention has the beneficial effects that:

when the pressure of the pressure sensor on the oxygen pipeline is reduced, the controller automatically controls the turbo fan to increase the rotating speed, so that the flow and the pressure of the air in the air pipeline are increased, and the flow and the pressure of the mixed gas in the oxygen conveying pipe are ensured to be in a required range; when the pressure of the pressure sensor on the oxygen pipeline rises, the controller automatically controls the turbo fan to reduce the rotating speed, so that the flow and the pressure of the air in the air pipeline are reduced, and the flow and the pressure of the mixed gas in the oxygen conveying pipe are ensured to be in a required range.

After oxygen and air entering the oxygen pipeline and the air pipeline enter the mixing chamber to be mixed, the elastic diaphragm is pushed to enable a gap between the elastic diaphragm and the connecting pipe to be communicated with the inner cavity of the connecting pipe and the gap between the elastic diaphragm and the connecting pipe, so that mixed gas can enter the connecting pipe from the mixing chamber through the communicated gap, the maximum pressure of the mixed gas output by the connecting pipe can be limited through the elastic diaphragm, and the potential safety hazard caused by overlarge pressure of the mixed gas input into a patient by the oxygen therapy pipe is avoided.

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 the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of an assisted therapy breathing apparatus according to the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a communication member of the present invention;

FIG. 3 is a schematic structural view of another embodiment of a communication member of the present invention;

fig. 4 is a schematic view of the filter structure of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

An assisted therapy breathing apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the respiratory assistance device for therapy according to the embodiment of the present invention includes an oxygen line 10, an air line 20, a controller (not shown), a communication member 30, and an oxygen tube 40, wherein the oxygen line 10 and the air line 20 are both communicated with the oxygen line through the communication member 30, and oxygen and air are respectively introduced into the communication member 30 through the oxygen line 10 and the air line 20, and mixed in the communication member 30, pass through the oxygen tube 40, and are discharged from a breathing mask connected to a free end of the oxygen tube 40.

One end of the oxygen pipeline 10 is an oxygen inlet, a pressure sensor 11 is arranged on the oxygen pipeline 10, and the pressure sensor 11 is used for monitoring the pressure at the oxygen inlet; the controller is used for receiving the pressure signal of the pressure sensor 11, comparing the pressure signal with a preset pressure value and then sending a control signal; one end of the air pipeline 20 is an air inlet, a turbo fan 21 for receiving the pressure signal is arranged on the air pipeline 20, and the turbo fan 21 is used for sucking air to the external environment through the air inlet and adjusting the rotating speed according to the pressure signal; the communicating member 30 has a mixing chamber therein, and the mixing chamber is respectively communicated with the other ends of the air pipe 20 and the oxygen pipe 10, and is used for mixing the oxygen supplied by the oxygen pipe 10 and the air sucked from the turbo fan 21, and outputting the mixed gas through an output interface 321; one end of the oxygen therapy tube 40 is inserted into the output port 321 of the communicating member 30, and the other end is connected to a breathing mask.

According to the auxiliary treatment breathing device, when the pressure of the pressure sensor 11 on the oxygen pipeline 10 is reduced, the controller automatically controls the turbo fan 21 to increase the rotating speed, so that the flow rate and the pressure of the air in the air pipeline 20 are increased, and the flow rate and the pressure of the mixed gas in the oxygen conveying pipe 40 are ensured to be in a required range; when the pressure of the pressure sensor 11 on the oxygen pipeline 10 rises, the controller automatically controls the turbo fan 21 to reduce the rotation speed, so as to reduce the flow rate and the pressure of the air in the air pipeline 20, and further ensure that the flow rate and the pressure of the mixed gas in the oxygen conveying pipe 40 are in the required range.

In one embodiment of the present invention, the communication member 30 includes a main body 31, a connection pipe 32, and an elastic diaphragm 33.

The main body 31 is cylindrical, one end of the main body is closed, the other end of the main body is open, and the other end of the oxygen pipeline 10 and the other end of the air pipeline 20 are respectively communicated to two opposite sides of the side wall of the main body 31; the connecting pipe 32 is coaxially inserted into the main body 31, and an inner end of the connecting pipe penetrates through the open end of the main body 31, and an outer end of the connecting pipe penetrates through the closed end of the main body 31 to form the output interface 321; the edge of the elastic diaphragm 33 is connected to the open end of the main body 31 in a sealing manner, and the middle part of the elastic diaphragm 33 is pressed against the inner end of the connecting pipe 32, so that the elastic diaphragm 33 forms the annular mixing chamber 38 together with the inner wall of the main body 31 and the outer wall of the connecting pipe 32; when the oxygen supplied by the oxygen line 10 and the air sucked from the turbo fan 21 enter the mixing chamber 38, the formed mixed gas can enter from the inner end of the connecting pipe 32 by pushing the elastic diaphragm 33.

That is, after the oxygen and air entering the oxygen line 10 and the air line 20 enter the mixing chamber 38 to be mixed, the elastic diaphragm 33 is pushed to form a gap between the elastic diaphragm and the connecting pipe 32, the gap is formed between the elastic diaphragm and the connecting pipe 32, and the mixed gas can enter the connecting pipe 32 from the mixing chamber 38 through the gap, so that the maximum pressure of the mixed gas output by the connecting pipe 32 can be limited through the elastic diaphragm 33, and the potential safety hazard caused by the overlarge pressure of the mixed gas input into the patient by the oxygen therapy tube 40 can be avoided.

Further, the elastic diaphragm 33 may be made of elastic materials such as rubber, latex, silica gel, etc. to define a gap distance between the elastic diaphragm 33 and the connecting pipe 32 when the elastic diaphragm is deformed according to actual needs, so as to define a maximum pressure of the output mixed gas; and when the pressure of the mixed gas in the mixing chamber 38 is too large to exceed the maximum bearing pressure of the elastic diaphragm 33, the elastic diaphragm 33 is broken to ensure that the pressure of the output mixed gas does not exceed the set value.

Furthermore, the communication member 30 further includes an end cap 34, and the end cap 34 is covered on the open end of the main body 31 to fix the elastic diaphragm 33 between the main body 31 and the end cap 34. Preferably, the side wall of the end cap 34 is further provided with a plurality of through holes 341, so that the elastic diaphragm 33 can be protected by the end cap 34. An O-ring is disposed between the end cap 34 and the main body 31, and the O-ring is fitted over the open end outer wall of the main body 31 to fix the elastic diaphragm 33 on the main body 31; in this way, the sealing performance between the elastic diaphragm 33 and the main body 31 is ensured, and the elastic diaphragm 33 can be replaced quickly when it breaks or when a diaphragm of a different elastic performance is replaced.

In an embodiment of the present invention, an oxygen port 36 and an air port 37 communicating with the annular mixing chamber 38 are respectively disposed on opposite sides of an outer wall of the main body 31, the other end of the oxygen line 10 is connected to the oxygen port 36, and the other end of the air line 20 is connected to the air port 37. That is, the communicating member 30 is detachably connected to the oxygen pipeline 10, the air pipeline 20 and the oxygen tube 40, so that when the communicating member 30 with different sizes needs to be replaced (mainly replacing the size of the mixing chamber 38), the whole communicating member 30 can be replaced quickly, and the use is convenient.

Further, the air inlets of the oxygen port 36 and the air port 37 are respectively tangential to the annular mixing chamber 38. That is, as the oxygen and air enter the annular mixing chamber 38, they mix in a spiral-like fashion, thereby facilitating mixing of the gases and the rapid entry of the mixed gases into the connecting tube 32.

In an embodiment of the present invention, the air pipeline 20 further includes a filter 22, and the filter 22 includes a housing 221 and a filter element disposed in the housing 221; the housing 221 has a first end 222 and a second end 223 opposite to each other, the first end 222 is provided with a plurality of air inlet holes 2221 therein to form the air inlet, and the second end 223 is communicated with the end of the air pipeline 20; the filter element comprises a first foam layer 224, a first filter element layer 225, a water absorbing layer 226, a second foam layer 227 and a second filter element layer 228 which are arranged in sequence from a first end 222 to a second end 223.

That is, the air entering the interior of the housing 221 flows from the first end 222 to the second end 223, and during the flowing process, it needs to pass through the first foam layer 224, the first filter element layer 225, the water absorption layer 226, the second foam layer 227 and the second filter element layer 228 in sequence, oil mist and the like of the air can be absorbed through the first foam layer 224 and the second foam layer 227, at the same time, the inhaled air can uniformly enter the subsequent first filter element layer 225, the water absorption layer 226 and the second filter element layer 228, pollutants (including dust particles, germs and the like) in the air can be filtered through the first filter element layer 225, and then the water absorption layer 226 can absorb and remove moisture in the air, thereby obtaining fresh and clean air.

Preferably, a

check valve

12, 23 is further disposed on each of the oxygen pipeline 10 and the air pipeline 20, and the check valve 23 on the air pipeline 20 is located between the turbo fan 21 and the communication member 30 and allows air to flow from the turbo fan 21 to the communication member 30. The check valve 12 of the air line 20 allows air to flow only from the oxygen inlet to the communication member 30, that is, the oxygen and air in the oxygen line 10 and the air line 20 can only flow into the mixing chamber 38 and can not flow from the mixing chamber 38 to the oxygen line 10 and the air line 20.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An adjunctive therapeutic respiratory device, comprising:

when the pressure of the pressure sensor on the oxygen pipeline is reduced, the controller automatically controls the turbo fan to increase the rotating speed;

when the pressure of the pressure sensor on the oxygen pipeline rises, the controller automatically controls the turbo fan to reduce the rotating speed;

one end of the oxygen therapy pipe is inserted on the output interface of the communicating piece, and the other end of the oxygen therapy pipe is connected with a breathing mask;

the communicating member includes:

when the pressure of the mixed gas in the mixing cavity exceeds the maximum bearing pressure of the elastic diaphragm, the elastic diaphragm is broken so that the pressure of the output mixed gas is lower than a set value;

2. The assisted-therapy breathing apparatus of claim 1, wherein the communication member further includes an end cap, the end cap being configured to fit over the open end of the body to secure the flexible diaphragm between the body and the end cap.

3. An assisted therapy breathing apparatus according to claim 2, wherein an O-ring seal is provided between the end cap and the main body, the O-ring seal fitting over the outer wall of the open end of the main body to secure the resilient diaphragm to the main body.

4. The respiratory device of claim 2 or 3, wherein the side wall of the end cap further comprises a plurality of through holes.

5. The assisted therapy breathing device of claim 1, wherein an oxygen port and an air port are disposed on opposite sides of the outer wall of the main body and communicate with the annular mixing chamber, the other end of the oxygen line is connected to the oxygen port, and the other end of the air line is connected to the air port.

6. The assisted-therapy breathing apparatus of claim 5, wherein the oxygen port and the air port each have an air intake direction tangential to the annular mixing chamber.

7. The assisted-therapy breathing device of claim 1, wherein the airline further includes a filter, the filter including a housing and a filter cartridge disposed within the housing;

8. The respiratory assistance device according to claim 1, wherein a one-way valve is disposed on each of said oxygen line and said air line, said one-way valve being disposed on said air line between said turbo fan and said communicating member and allowing air to flow from said turbo fan to said communicating member.