CN103182140A

CN103182140A - Breather valve

Info

Publication number: CN103182140A
Application number: CN2011104572129A
Authority: CN
Inventors: 杨丹
Original assignee: Beijing Aeonmed Co Ltd
Current assignee: Beijing Aeonmed Co Ltd
Priority date: 2011-12-30
Filing date: 2011-12-30
Publication date: 2013-07-03
Anticipated expiration: 2031-12-30
Also published as: CN103182140B

Abstract

The invention discloses a breather valve. The breather valve comprises a valve cap and a valve body, wherein a valve cavity is formed in the valve body; an air outlet and an air feed port connected with a patient side are also provided; the valve body is further provided with an inspiration port for a patient to inhale freely; an air passage is formed in the valve cap which is provided with an air inlet; a first valve clack is arranged at the joint between the valve cap and the valve body; the air outlet is provided with a second valve clack; the inspiration port is provided with a lateral membrane; the first valve clack and the second valve clack are connected through an umbrella-shaped body; and the valve cavity is selectively communicated with the air inlet through the first valve clack, selectively communicated with the outside through the lateral membrane, and selectively communicated with the air outlet through the second valve clack. The breather valve is provided with the inspiration port for the patient to inhale freely, and has the advantages that the structural manufacturability is excellent and breathing of the patient using the breather valve is always kept smooth.

Description

Breather valve

Technical field

The present invention relates to medical instruments field, relate in particular to a kind of breather valve.

Background technology

Respirator is that a kind of normal physiological that can replace, control or change the people is breathed, increase pulmonary ventilation volume, improve respiratory function, alleviate work of breathing consumption, save the medical apparatus and instruments of heart reservation ability, breather valve is the important component part of first-aid respirator, it is the crucial bridge that connects between first-aid respirator host machine part and the patient, it is the key that realizes the treatment function of respirator, so function and performance requirement to breather valve are very strict, if there are some factors of instability in breather valve, will have a strong impact on the treatment to patient.

The structure that present breather valve device on the market generally adopts respiration valve and diaphragm to be assembled together, breather valve device shown in Figure 1 for example, it comprises valve body 4a, valve gap 1a, valve pocket 5a and diaphragm 3a, respiration valve 2a, wherein, diaphragm 3a and respiration valve 2a combine be arranged on valve pocket 5a near place, the end of valve gap 1a, and make valve pocket 5a optionally be arranged on valve gap 1a on air inlet 6a or air vent 7a be connected.When air-breathing, air-flow enters from the air inlet 6a that is arranged on the valve gap 1a, and under the effect of stream pressure, diaphragm 3a moves down, thereby air-flow is entered in the valve pocket 5a from the slit between diaphragm 3a and the respiration valve 2a, and then gas is sent into patient end; When exhaling, under the effect of breath pressure, diaphragm 3a upwards pushes respiration valve 2a, simultaneously, gas pressure makes respiration valve 2a to upper process, thereby the slit occurs between the end near valve gap 1a of respiration valve 2a and valve pocket 5a, gas enters air vent 7a from this slit, thereby patient expired gas is discharged.

There is the processability of product structure defective in above-mentioned breather valve device, because respiration valve and diaphragm are assembled together, and respiration valve and diaphragm generally adopt the medical silica-gel material to make, patient expired gas is discharged by the breather valve inner chamber, therefore the water droplet that condenses on a small quantity and form inevitably can appear in the valve pocket of breather valve, thereby cause respiration valve and diaphragm to bond together easily, cause breathing to have some setbacks easily, use to have potential safety hazard.

The disclosed a kind of breather valve device of Chinese patent literature CN 101745169A for example again, as shown in Figure 2, it comprises valve body 1b, valve gap 3b, valve pocket 2b, diaphragm 6b, respiration valve 7b, wherein, sidewall at valve pocket 2b arranges air inlet pipe 4b, and diaphragm 6b is placed in the air inlet pipe 4b, and air inlet pipe 4b is communicated with valve pocket 2b selectivity, another sidewall of valve pocket 2b arranges exhaustor 5b, and exhaustor 5b is communicated with valve pocket 2b selectivity by respiration valve 7b.When air-breathing, air-flow enters from air inlet pipe 4b, and compressing diaphragm 6b makes the gap to occur between diaphragm 6b and its support that air-flow enters valve pocket 2b from this gap, and then flows into patient end; During expiration, respiration valve 7b makes itself and valve pocket 2b the slit occur under the air-flow effect, and the gas of exhalation can be entered among the exhaustor 5b by this slit, thus the gas of breathing out is discharged.

The shortcoming of this breather valve device is: it does not arrange by the autonomous suction line of patient.Because in actual application, respirator can go wrong unavoidably, causes it operate as normal to carry out air feed, just need this moment patient to suck air from the breather valve outside voluntary, so there is Insufficient defective in this breather valve device.

Summary of the invention

The objective of the invention is to address the above problem, a kind of breather valve is provided, it is provided with the autonomous air entry of patient, have processability of product structure good, can guarantee that patient in use breathes unobstructed advantage all the time.

The objective of the invention is to be achieved through the following technical solutions:

A kind of breather valve, comprise valve gap, valve body, described valve inner has valve pocket, and be provided with air vent, the air taking port that joins with patient end, described valve body also is provided with the autonomous air-breathing air entry for patient, described valve gap inside has gas passage, and be provided with air inlet, described valve gap and valve body joint are provided with first flap, and described air vent is provided with second flap, and described air entry arranges latallae, described first flap and second flap connect by the umbellate form bulk phase, described valve pocket is communicated with by the first flap selectivity with air inlet, and described valve pocket is communicated with by the latallae selectivity with extraneous, and described valve pocket is communicated with by the second flap selectivity with air vent.

Preferably, described valve gap is arranged on the end place relative with air vent on the valve body, and described air taking port and described air entry are oppositely arranged.

Preferably, the end that joins at described valve gap and valve body is provided with female thread, described valve body coupling female thread is provided with external screw thread, so that valve gap and valve body are by being threaded, have first cannelure at described female thread root and in described valve gap inboard, corresponding first cannelure arranges second cannelure in the end of valve body, and described first flap is installed in the space of being made up of first cannelure and second cannelure.

Preferably, the inner end of corresponding air vent has the 3rd cannelure on the described valve body, in described the 3rd cannelure underlay is installed, and described second flap is installed in described underlay top.

Preferably, described umbellate form body comprises top plate and the lower plywood that is parallel to each other, and connect as one by the connecting rod that passes upper and lower laminate, center, have the groove of ccontaining top plate on described first flap, have the groove of ccontaining lower plywood on described second flap, described first flap and second flap connect by the umbellate form bulk phase, make upper and lower laminate, embed in the corresponding groove respectively.

Preferably, the outer end of the corresponding air entry of described valve body is provided with latallae, described latallae is installed in latallae and supports, and described latallae and latallae support and be fixed on the valve body by gland, and has the manhole that is in communication with the outside in the support of described latallae.

Preferably, described underlay is stepped annular solid, and its inner hollow out, and be provided with the cross reinforcement in inside arranges link in described reinforcement central lower, the described link connection tube that has been threaded downwards.

Preferably, have a plurality of air-vents on the described top plate, corresponding air-vent top plate is provided with diaphragm.

Preferably, the bottom of described connecting rod is provided with back-up ring, and described connecting rod outer race is provided with spring, and makes spring one end contact with the link bottom, and the other end contacts with back-up ring, the step surface that described connection tube inside has the spacing usefulness of back-up ring.

Preferably, also be provided with detection mouth for detection of the valve pocket internal pressure on the described valve body.

Beneficial effect of the present invention is: by being provided for the autonomous air-breathing air entry of patient at valve body, can be under respirator can not the situation of air feed, and patient can suck air from the breather valve outside voluntary, make that the function of breather valve is more complete; By at valve gap and valve body joint first flap being set, by second flap is set at air vent, first flap and second flap connect by the umbellate form bulk phase, the umbellate form body is by last, lower plywood links to each other first flap with second flap, have some air-vents at top plate, corresponding air-vent is provided with diaphragm, when air inlet, under the effect of gas pressure, umbellate form body integral body moves down, and makes to produce the gap between diaphragm and the air-vent, gas enters valve pocket thus, enter patient end, second flap drives at the umbellate form body and moves down the shutoff air vent simultaneously, and source of the gas can not leak to air vent when making air inlet; When exhaling, under the effect of gas pressure, move on the umbellate form body, make second flap and air vent produce the slit, gas is discharged by air vent, herein with flap and diaphragm isolation design, avoid flap and diaphragm to bond together easily, caused breathing the phenomenon that has some setbacks; On valve body, also be provided with simultaneously the detection mouth for detection of the valve pocket internal pressure, connect detecting instrument, the working condition of monitoring valve that can be real-time by it.The contrast prior art, this breather valve is provided with the autonomous air entry of patient, have processability of product structure good, can guarantee that patient in use breathes unobstructed advantage all the time.

Description of drawings

The present invention is described in further detail with embodiment with reference to the accompanying drawings below.

Fig. 1 is the partial schematic sectional view of breather valve device of the prior art;

Fig. 2 is the cross-sectional schematic of another breather valve device of the prior art;

Fig. 3 is the structural representation of breather valve of the present invention;

Fig. 4 is the cross-sectional schematic of breather valve of the present invention;

Fig. 5 is the cross-sectional schematic of the valve body shown in Fig. 3;

Fig. 6 is the cross-sectional schematic of the valve gap shown in Fig. 3;

Fig. 7 is the perspective view of the umbellate form body shown in Fig. 4;

Fig. 8 is the perspective view of the underlay shown in Fig. 4;

Fig. 9 is the cross-sectional schematic of the connection tube shown in Fig. 4;

Figure 10 is the cross-sectional schematic that the latallae shown in Fig. 4 supports.

Among the figure:

1, valve gap; 2, valve body; 3, valve pocket; 4, air vent; 5, air taking port; 6, air entry; 7, gas passage; 8, air inlet; 9, first flap; 10, second flap; 11, latallae; 12, umbellate form body; 13, end; 14, first cannelure; 15, second cannelure; 16, the 3rd cannelure; 17, underlay; 18, top plate; 19, lower plywood; 20, connecting rod; 21, latallae supports; 22, gland; 23, manhole; 24, reinforcement; 25, link; 26, connection tube; 27, air-vent; 28, diaphragm; 29, back-up ring; 30, spring; 31, step surface; 32, detect mouth;

1a, valve gap; 2a, respiration valve; 3a, diaphragm; 4a, valve body; 5a, valve pocket; 6a, air inlet; 7a, air vent;

1b, valve body; 2b, valve pocket; 3b, valve gap; 4b, air inlet pipe; 5b, exhaustor; 6b, diaphragm; 7b, respiration valve.

The specific embodiment

In Fig. 3～4 illustrated embodiments, breather valve of the present invention, comprise valve gap 1, valve body 2, valve body 2 inside have valve pocket 3, and be provided with air vent 4, the air taking port 5 that joins with patient end, valve body 2 also is provided with the autonomous air-breathing air entry 6 for patient, valve gap 1 inside has gas passage 7, and be provided with air inlet 8, valve gap 1 is provided with first flap 9 with valve body 2 joints, air vent 4 is provided with second flap 10, air entry 6 arranges latallae 11, the first flaps 9 and links to each other by umbellate form body 12 with second flap 10, and valve pocket 3 is communicated with by first flap, 9 selectivitys with air inlet 8, valve pocket 3 is communicated with by latallae 11 selectivitys with extraneous, and valve pocket 3 is communicated with by second flap, 10 selectivitys with air vent 4.

Referring to Fig. 5, show the concrete structure of valve body, a side of valve body 2 arranges air taking port 5, and opposite side arranges air entry 6, and upper end 13 joins with valve gap 1, and the bottom arranges air vent 4, and air taking port 5 is used for connecting patient end, carries gas to patient; Air entry 6 is used for when respirator normally during air feed, and patient can suck air from outside voluntary; End 13 is provided with external screw thread, is used for being threaded valve gap 1, and is provided with second cannelure 15 in the inboard, is used for installing first flap 9; The inner end of corresponding air vent is provided with the 3rd cannelure 16, is used for installing underlay 17 and second flap 10.

Referring to Fig. 6, show the concrete structure of valve gap, valve gap 1 one sides arrange air inlet 8, inside is gas passage 7, valve gap 1 is provided with female thread with the end that valve body 2 joins, be provided with the installing space that first cannelure, 14, the first cannelures 14 and second cannelure 15 have been formed first flap 9 jointly at the root of female thread and in the inboard of valve gap 1, and first flap 9 can move up and down in this space under external force.

Referring to Fig. 7, show the concrete structure of umbellate form body, umbellate form body 12 is by in center rod 20 cross-under,

lower plywood

18,19 form, and on,

lower plywood

18,19 be arranged in parallel, have eight air-vents 27 on the top plate 18, corresponding air-vent 27 arranges eight diaphragms 28 at top plate, lower plywood 19 is circular entity, by with top plate 18, lower plywood 19 embeds first flap 9 respectively, in second flap 10, realization links to each other first flap 9 with second flap 10, further, first flap 9 and second flap 10 are realized interlock under umbellate form body 12 drives, thereby realize effectively separating of air inlet and exhaust process.

Referring to Fig. 8, show the concrete structure of underlay, underlay 17 is stepped annular solid, its inner hollow out, and portion arranges cross reinforcement 24 within it is provided with link 25 in the central lower of reinforcement 24, link 25 has external screw thread, is used for linking to each other with connection tube 26 by screw thread.

Referring to Fig. 9, show the concrete structure of connection tube, connection tube 26 1 ends are provided with female thread, be used for being threaded underlay 17, its inside has step surface 31, its effect is when the umbellate form body moves down, and restriction back-up ring 29 moves down, and makes umbellate form body 12 to move in the link 25 of underlay and the space between the step surface 31.

Referring to Figure 10, show the concrete structure that latallae supports, latallae supports 21 centers and has ladder hole, be used for installation side diaphragm 11, side at ladder hole also has manhole 23, latallae 11 tops have annular protrusion, the bottom is disc, latallae 11 is installed in latallae and supports on 21, make its annular protrusion place the top of step through-hole, disc is close to latallae and is supported 21 medial surface setting, and disc makes air entry 6 be isolated from the outside, manhole 23 is in communication with the outside, and annular protrusion and disc can guarantee that latallae 11 can not support 21 by the landing latallae simultaneously.

Referring to Fig. 3,5, valve body 2 one sides have screwed hole, are used for being threaded detector tube, and detector tube arranges and detects mouth 32, for detection of the valve pocket internal pressure.

Referring to Fig. 4, connecting rod 20 bottoms are provided with back-up ring 29, and connecting rod 20 outer race are provided with spring 30, and make spring 30 1 ends contact with link 25 bottoms, and the other end contacts with back-up ring 29, and connection tube 26 inside have the step surface 31 of back-up ring 29 spacing usefulness.

When air-breathing, source of the gas enters valve gap gas inside passage 7 from air inlet 8, under the gas pressure effect, promoting first flap 9 moves down in the space of being made up of first cannelure 14 and second cannelure 15, because top plate 18 is embedded into first flap, 9 inside, so driving umbellate form body 12, first flap 9 moves down, because lower plywood 19 is embedded into second flap, 10 inside, so the connecting rod 20 of umbellate form body 12 overcomes spring 30 elastic force, and drive second flap 10 and move down; When top plate 18 moves down, make to produce the gap between air-vent 27 on the top plate and the diaphragm 28 that gas enters valve pocket 3 from this gap, because second flap 10 moves down, compresses underlay 17, makes the gap can not occur between second flap 10 and the underlay 17; Simultaneously, under the effect of gas pressure, the disc of latallae 11 is adjacent to latallae laterally and supports 21 medial surface, can't produce the gap; So, enter into valve pocket 3 gas inside and have only from air taking port 5 and be delivered to patient end, can not reveal from air vent 4 and air entry 6.

During expiration, patient expired gas enters valve pocket 3 from air taking port 5, under the effect of gas pressure, upwards boost first flap 9 and inner top plate 18 thereof, first flap 9 upwards holds out against to first cannelure, 14 bottoms, umbellate form body 12 also moves upward thereupon, but this moment, diaphragm 28 was close to the upper surface of top plate 18, can not produce the gap; Lower plywood 19 and second flap 10 overcome spring force and move upward, and make the slit to occur between second flap 10 and the underlay 17; Simultaneously, under the effect of gas pressure, the disc of latallae 11 is adjacent to latallae laterally and supports 21 medial surface, can't produce the gap; So the gas of exhalation has only by the slit between second flap 10 and the underlay 17 and discharges, can not reveal from air inlet 8 and air entry 6.

When respirator normally during air feed, valve pocket 3 internal pressures are less than ambient pressure at this moment, and under the ordering about of pressure reduction, outside air is inwardly impacted by manhole 23, make the disc of latallae 11 and latallae support 21 medial surface and the slit occurs, gas slit thus enters in the valve pocket 3; Simultaneously, under spring 30 elastic force effects, the gap can be do not occurred between second flap 10 and the underlay 17, the gap can be do not occurred between diaphragm 28 and the top plate 18 yet; So the air that enters into valve pocket 3 inside enters patient end by air taking port 5; When patient exhales, can operate as normal have nothing to do with respirator, principle also is identical.

Claims

1. breather valve, comprise valve gap (1), valve body (2), described valve body (2) inside has valve pocket (3), and be provided with air vent (4), the air taking port (5) that joins with patient end, it is characterized in that: described valve body (2) also is provided with the autonomous air-breathing air entry (6) for patient, described valve gap (1) inside has gas passage (7), and be provided with air inlet (8), described valve gap (1) is provided with first flap (9) with valve body (2) joint, described air vent (4) is provided with second flap (10), described air entry (6) arranges latallae (11), described first flap (9) links to each other by umbellate form body (12) with second flap (10), described valve pocket (3) is communicated with by first flap (9) selectivity with air inlet (8), described valve pocket (3) is communicated with by latallae (11) selectivity with extraneous, and described valve pocket (3) is communicated with by second flap (10) selectivity with air vent (4).

2. breather valve according to claim 1, it is characterized in that: the end (13) relative with air vent (4) that described valve gap (1) is arranged on the valve body (2) located, and described air taking port (5) is oppositely arranged with described air entry (6).

3. breather valve according to claim 1, it is characterized in that: the end that joins at described valve gap (1) and valve body (2) is provided with female thread, described valve body (2) coupling female thread is provided with external screw thread, so that valve gap (1) and valve body (2) are by being threaded, have first cannelure (14) at described female thread root and in described valve gap (1) inboard, corresponding first cannelure (14) arranges second cannelure (15) in the end (13) of valve body, and described first flap (9) is installed in the space of being made up of first cannelure (14) and second cannelure (15).

4. breather valve according to claim 1, it is characterized in that: the inner end that described valve body (2) is gone up corresponding air vent (4) has the 3rd cannelure (16), underlay (17) is installed in described the 3rd cannelure (16), and described second flap (10) is installed in described underlay (17) top.

5. breather valve according to claim 1, it is characterized in that: described umbellate form body (12) comprises top plate (18) and the lower plywood (19) that is parallel to each other, and connect as one by the connecting rod (20) that passes upper and lower laminate (18), (19) center, have the groove of ccontaining top plate (18) on described first flap (9), have the groove of ccontaining lower plywood (19) on described second flap (10), described first flap (9) links to each other by umbellate form body (12) with second flap (10), makes upper and lower laminate (18), (19) embed respectively in the corresponding groove.

6. breather valve according to claim 1, it is characterized in that: the outer end of the corresponding air entry of described valve body (2) (6) is provided with latallae (11), described latallae (11) is installed in latallae and supports on (21), described latallae (11) and latallae support (21) and are fixed on the valve body (2) by gland (22), and have the manhole (23) that is in communication with the outside in the described latallae support (21).

7. breather valve according to claim 4, it is characterized in that: described underlay (17) is stepped annular solid, its inner hollow out, and be provided with cross reinforcement (24) in inside, in described reinforcement (24) central lower link (25) is set, described link (25) connection tube (26) that has been threaded downwards.

8. breather valve according to claim 5, it is characterized in that: have a plurality of air-vents (27) on the described top plate (18), corresponding air-vent (27) top plate (18) is provided with diaphragm (28).

9. breather valve according to claim 5, it is characterized in that: the bottom of described connecting rod (20) is provided with back-up ring (29), described connecting rod (20) outer race is provided with spring (30), and make spring (30) one ends contact with link (25) bottom, the other end contacts with back-up ring (29), and described connection tube (26) inside has the step surface (31) of the spacing usefulness of back-up ring (29).

10. according to claim 1 or 2 or 3 or 4 or 6 arbitrary described breather valves, it is characterized in that: also be provided with the detection mouth (32) for detection of the valve pocket internal pressure on the described valve body (2).