CN101468235B - Valve for blocking laughing gas - Google Patents
Valve for blocking laughing gas Download PDFInfo
- Publication number
- CN101468235B CN101468235B CN2007103023537A CN200710302353A CN101468235B CN 101468235 B CN101468235 B CN 101468235B CN 2007103023537 A CN2007103023537 A CN 2007103023537A CN 200710302353 A CN200710302353 A CN 200710302353A CN 101468235 B CN101468235 B CN 101468235B
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- CN
- China
- Prior art keywords
- laughing gas
- oxygen
- pressure
- valve
- force application
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- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 title claims abstract description 196
- 235000013842 nitrous oxide Nutrition 0.000 title claims abstract description 98
- 230000000903 blocking effect Effects 0.000 title description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000001301 oxygen Substances 0.000 claims abstract description 41
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 41
- 239000012528 membrane Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 206010002091 Anaesthesia Diseases 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 230000037005 anaesthesia Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000036407 pain Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention discloses a laughing gas block valve which is used for on-off control of laughing gas and comprises a pressure releasing valve seat (5) that is provided with a laughing gas channel at the inner part, wherein the inner part of laughing gas block valve also comprises the following components: a film assembly part (8) which has a first side that is installed in the oxygen chamber in the laughing gas block vale and contacts with oxygen and a second side that contacts the laughing gas in the laughing gas channel; and a force applying mechanism (10) which has one end that elastically abuts against the second side of film assembly part (8), wherein, the force applying mechanism (10) operates in cooperation with the film assembly part (8) thereby controlling the on-off of laughing gas channel. Therefore the laughing gas block valve can block laughing gas quickly and effectively through a simple structure.
Description
Technical Field
The invention relates to a medical device, in particular to a device for controlling the on-off of a medical air source and converting the pressure of the air source.
Background
At present, when a patient needs a major operation, in order to prevent the patient from feeling pain, i.e., to keep the patient in a coma, laughing gas (i.e., anesthetic) needs to be input into the patient for medical anesthesia. Anaesthetizing patients is a difficult thing, the quantity is small, and doctors are difficult to perform operations on the patients; with a large amount, the patient will be in a coma forever. The dosage of laughing gas is difficult to control, which brings inconvenience for timely operating the patient and saving the life of the patient.
For the problems, laughing gas is generally injected manually at present, which requires skill level and is also suggested by people; some instruments are used for assisting injection, but the pressure of an air source cannot be kept in a relatively constant pressure state, and the amount of laughing gas is not well controlled.
In the existing anesthesia machine, a fail-safe valve is generally installed between the laughing gas supply source and the flow control module, which provides a contact surface between the laughing gas source and the oxygen gas source, and if the oxygen supply pressure is reduced or cut off, the valve will cut off the laughing gas source or reduce the pressure of the laughing gas, thereby reducing the flow of the laughing gas. However, such fail-safe valves generally do not ensure a rapid and effective immediate shut-off of laughing gas when the oxygen gas source is disconnected.
Disclosure of Invention
The invention aims to provide a laughing gas cut-off valve which controls the on-off of laughing gas and converts the pressure of the laughing gas through oxygen.
Therefore, the invention adopts the following technical scheme. The utility model provides a laughing gas block valve for the on-off control of laughing gas, including the inside relief pressure valve disk seat that is equipped with the laughing gas passageway, wherein, inside still including of laughing gas block valve: the first side of the diaphragm assembly part is in contact with oxygen in an oxygen chamber arranged in the laughing gas cutoff valve, and the second side of the diaphragm assembly part is in contact with laughing gas in the laughing gas channel; one end of the force application mechanism is elastically abutted against the second side of the diaphragm assembly part; wherein, the force application mechanism and the diaphragm assembly part act in a matching way, thereby controlling the on-off of the laughing gas channel.
When the oxygen pressure is not enough to overcome the pressure of the force application mechanism, the force application mechanism cuts off the laughing gas channel; when the oxygen pressure is enough to overcome the pressure of the force application mechanism, the diaphragm assembly part is pushed to compress the force application mechanism, and the force application mechanism can open the laughing gas channel.
Preferably, the diaphragm assembly includes a diaphragm body and a steel sleeve fixed to a center of the diaphragm body by pressing, and one end of the force application mechanism is connected to the steel sleeve. A gasket for sealing is provided between the periphery of the membrane body of the diaphragm assembly and the inner wall of the pressure-reducing valve seat.
In addition, the laughing gas cutoff valve of the present invention further comprises: the valve cover is used for providing an oxygen workplace; the bent-angle quick cannula joint is arranged on the valve seat of the pressure reducing valve, is communicated with an external laughing gas pipe and the laughing gas channel and is used for inputting and outputting laughing gas; and the right-angle quick cannula joint is arranged on the valve cover, is communicated with an external oxygen pipe and the oxygen chamber and is used for inputting oxygen.
In the laughing gas shutoff valve, the urging means is preferably a spring, and the film body of the diaphragm assembly is preferably made of a plastic film.
The invention has the beneficial effects that: simple structure, convenient control, easy operation and convenient installation. Thereby enabling the patient to be treated in time and ensuring the life safety of the patient.
Drawings
Fig. 1 is a perspective view of a laughing gas shut-off valve of the present invention.
Fig. 2 is an overall cross-sectional view of the laughing gas shut-off valve of the invention.
FIG. 3 is a front view, partially in section, of a laughing gas shut-off valve of the invention.
Fig. 4 is a perspective view of a diaphragm assembly in the laughing gas shut-off valve of the present invention.
FIG. 5 is a block diagram of a diaphragm assembly used to adjust the relative balance of pressures in accordance with an embodiment of the present invention.
FIG. 6 is a diagram of an on/off configuration for a laughing gas valve using a pressure reducing valve seat with a spring and a diaphragm assembly according to an embodiment of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a perspective view of a laughing gas shut-off valve according to the invention, fig. 2 is an overall sectional view of the laughing gas shut-off valve according to the invention, and fig. 3 is a partially sectional front view of the laughing gas shut-off valve according to the invention. As shown in fig. 1 to 3, the present invention is a laughing gas cutoff valve for on-off control and conversion of gas source pressure for medical gas source (especially laughing gas), comprising: a pressure reducing valve seat 5; a pressure reducing valve cover 1 arranged at the lower part of the pressure reducing valve seat 5; a diaphragm mount 8 disposed inside the pressure-reducing valve seat 5; two bent-angle quick cannula joints 3 which are arranged on a valve seat 5 of the pressure reducing valve and are respectively used for inputting and outputting laughing gas; a right-angle quick cannula joint 6 which is arranged on the valve seat 5 of the pressure reducing valve and is used for inputting oxygen and plays a role in controlling the on-off of laughing gas; and a biasing mechanism 10, a pressure reducing valve plug, etc. One end of the force application mechanism 10 is elastically abutted against the second side of the diaphragm assembly part 8 (the lower side of the diaphragm assembly part 8 in the figure), and the force application mechanism and the diaphragm assembly part 8 are operated in a matched manner, so that the on-off of the laughing gas channel is controlled.
In addition, a laughing gas channel communicated with the two bent-angle quick cannula connectors 3 is arranged in the pressure reducing valve seat 5, and the laughing gas channel and the two bent-angle quick cannula connectors 3 jointly form input and output loops of laughing gas; and is provided with an oxygen chamber communicated with the right-angle quick cannula joint 6. Wherein the laughing gas channel is located at a first side of the membrane assembly 8 (the upper side of the membrane assembly 8 in the figure), and the oxygen chamber is located at the above-mentioned second side of the membrane assembly 8, and the oxygen in the oxygen chamber is in direct contact with the above-mentioned second side of the membrane assembly 8.
The pressure reducing valve seat 5, the diaphragm assembly part 8, the force applying mechanism 10 and the pressure reducing valve cover 1 are mainly used for controlling the on-off and pressure conversion of laughing gas. When the pressure of oxygen reaches a pressure higher than the pressure of laughing gas, the oxygen pushes the diaphragm assembly part 8 upwards to open a laughing gas channel in the pressure reducing valve seat 5, and the laughing gas starts to pass through; when the oxygen pressure is insufficient to push the diaphragm assembly part 8, the diaphragm assembly part 8 can automatically cut off laughing gas; when the oxygen pressure is constant, a dynamic balance can be formed, and the balance of the output laughing gas pressure is ensured. In addition, the pressure reducing valve seat 5 is provided with an air inlet for conveying laughing gas and three air outlets for outputting the laughing gas, so that the adjustment can be conveniently carried out according to the actual requirements, and the laughing gas throughput is adjusted by blocking any one or two of the three air outlets for outputting the laughing gas.
Fig. 4 is a perspective view of the diaphragm assembly 8, and the following description refers to fig. 4. The diaphragm assembly 8 includes a diaphragm main body 82 and a steel sleeve 84 fixed to the center of the diaphragm main body 82 by pressing, and one end of the urging mechanism 10 is connected to the steel sleeve 84. A sealing gasket is provided between the periphery of the membrane body 82 of the diaphragm mount 8 and the inner wall of the pressure-reducing valve seat 5. The membrane assembly 8 is used to adjust the contact area of oxygen with laughing gas so that oxygen is used to control laughing gas. Therefore, when the pressure of the oxygen is constant, laughing gas with relatively stable pressure can be obtained.
FIG. 5 is a block diagram of a diaphragm assembly used to adjust the relative balance of pressure according to an embodiment of the invention, and FIG. 6 is a block diagram of a pressure relief valve seat with a spring and a diaphragm assembly used to achieve laughing gas make-and-break according to an embodiment of the invention. Next, the operation of controlling the opening and closing of laughing gas by the diaphragm mount 8 and the urging mechanism 10 will be described with reference to fig. 5 and 6.
The force application mechanism 10 is used for controlling the on-off of laughing gas. When the oxygen pressure is low, the acting force of the oxygen is not enough to overcome the pressure generated by the force applying mechanism 10 (in this embodiment, the spring force), so that the force applying mechanism 10 cuts off the laughing gas channel; when the pressure of oxygen is large enough, the acting force of oxygen can overcome the pressure generated by the elastic force of the spring to compress the spring, so that the force application mechanism 10 can be lifted, the inner hole of the valve seat 5 of the pressure reducing valve can generate a gap, and a laughing gas channel is provided.
The integral function of the laughing gas cutoff valve is to control the on-off and pressure conversion of laughing gas, for example, when the pressure of oxygen reaches 0.4pa, the oxygen pushes the diaphragm assembly part 8 to open the laughing gas channel, and laughing gas starts to pass through; when the oxygen pressure is insufficient, the force application mechanism 10 can automatically cut off the laughing gas channel and forbid the laughing gas from being introduced; when the oxygen pressure is constant, a dynamic balance is formed to ensure the balance of the output laughing gas pressure (see fig. 6).
In addition, the valve cover 1 mainly provides an oxygen working place and also has the function of fixing the whole body.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a laughing gas block valve for laughing gas's on-off control, including inside relief pressure valve disk seat (5) that are equipped with laughing gas passageway, its characterized in that: inside still including in laughing gas shut-off valve:
the first side of the diaphragm assembly part (8) is in contact with oxygen in an oxygen chamber arranged in the laughing gas cutoff valve, and the second side of the diaphragm assembly part is in contact with laughing gas in the laughing gas channel; and
a force application mechanism (10) with one end elastically abutted against the second side of the diaphragm assembly part (8); wherein,
the force application mechanism (10) and the diaphragm assembly part (8) act in a matched mode, so that the on-off of the laughing gas channel is controlled;
when the oxygen pressure is not enough to overcome the pressure of the force application mechanism (10), the force application mechanism (10) cuts off the laughing gas channel;
when the oxygen pressure is enough to overcome the pressure of the force application mechanism (10), the diaphragm assembly part (8) is pushed to compress the force application mechanism (10), and the force application mechanism (10) opens the laughing gas channel;
the diaphragm assembly (8) comprises a diaphragm main body (82) and a steel sleeve (84) fixed at the center of the diaphragm main body (82) through extrusion, and one end of the force application mechanism (10) is connected in the steel sleeve (84);
a sealing gasket (86) is arranged between the periphery of the membrane main body (82) of the membrane assembly (8) and the inner side wall of the pressure reducing valve seat (5);
laughing gas block valve still includes: the valve cover (1) is used for providing an oxygen workplace;
the bent-angle quick cannula joint (3) is arranged on the pressure reducing valve seat (5), is communicated with an external laughing gas pipe and the laughing gas channel, and is used for inputting and outputting laughing gas; and
the right-angle quick cannula joint (6) is arranged on the valve cover (1), is communicated with an external oxygen pipe and the oxygen chamber and is used for inputting oxygen.
2. Laughing gas cutoff valve according to claim 1,
the force application mechanism (10) is a spring.
3. Laughing gas cutoff valve according to claim 2,
the membrane body (82) of the membrane assembly (8) is made of a plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103023537A CN101468235B (en) | 2007-12-25 | 2007-12-25 | Valve for blocking laughing gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103023537A CN101468235B (en) | 2007-12-25 | 2007-12-25 | Valve for blocking laughing gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101468235A CN101468235A (en) | 2009-07-01 |
| CN101468235B true CN101468235B (en) | 2012-03-28 |
Family
ID=40826194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007103023537A Active CN101468235B (en) | 2007-12-25 | 2007-12-25 | Valve for blocking laughing gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101468235B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019025B (en) * | 2009-09-09 | 2013-08-14 | 北京谊安医疗系统股份有限公司 | Laughing gas block valve |
| CN102019032B (en) * | 2009-09-09 | 2013-10-23 | 北京谊安医疗系统股份有限公司 | Check valve, valve core and air feed module thereof |
| CN114209943B (en) * | 2021-11-23 | 2024-10-01 | 北京谊安医疗系统股份有限公司 | Switching device for driving gas of anesthesia machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094968A (en) * | 1993-05-27 | 1994-11-16 | 朱兴中 | Miniature respirator |
| US5927275A (en) * | 1997-03-20 | 1999-07-27 | Dragerwerk Ag | Valve for a respirator |
| CN2730398Y (en) * | 2004-09-02 | 2005-10-05 | 上海力申科学仪器有限公司 | Automatic fault-proof laughing-oxygen guiding shutting-off device |
| CN200939293Y (en) * | 2006-08-03 | 2007-08-29 | 上海力申科学仪器有限公司 | Medical gas outputting terminal |
-
2007
- 2007-12-25 CN CN2007103023537A patent/CN101468235B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094968A (en) * | 1993-05-27 | 1994-11-16 | 朱兴中 | Miniature respirator |
| US5927275A (en) * | 1997-03-20 | 1999-07-27 | Dragerwerk Ag | Valve for a respirator |
| CN2730398Y (en) * | 2004-09-02 | 2005-10-05 | 上海力申科学仪器有限公司 | Automatic fault-proof laughing-oxygen guiding shutting-off device |
| CN200939293Y (en) * | 2006-08-03 | 2007-08-29 | 上海力申科学仪器有限公司 | Medical gas outputting terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101468235A (en) | 2009-07-01 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |