CN104874071B - Gas pressurizer for Anesthesia machine and the Anesthesia machine with it - Google Patents
Gas pressurizer for Anesthesia machine and the Anesthesia machine with it Download PDFInfo
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- CN104874071B CN104874071B CN201410072384.8A CN201410072384A CN104874071B CN 104874071 B CN104874071 B CN 104874071B CN 201410072384 A CN201410072384 A CN 201410072384A CN 104874071 B CN104874071 B CN 104874071B
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- 206010002091 Anaesthesia Diseases 0.000 title claims abstract description 42
- 230000037005 anaesthesia Effects 0.000 title claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 127
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000001301 oxygen Substances 0.000 claims abstract description 102
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 102
- 238000009792 diffusion process Methods 0.000 claims abstract description 58
- 230000008676 import Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003381 stabilizer Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of gas pressurizer for Anesthesia machine and the Anesthesia machines with it.Gas pressurizer includes：Valve body, quick air supply channel and diffusion structure.Live gas import and common gas outlet are formed on valve body.Quick air supply channel has quickly oxygen supply entrance and quickly oxygen supply efflux nozzle.Diffusion structure is spaced apart with quick oxygen supply efflux nozzle to form negative pressure region, diffusion structure has inlet and outlet, the common gas outlet of outlet, import is opposite with quick oxygen supply efflux nozzle and import, live gas import and quick oxygen supply efflux nozzle are respectively communicated with negative pressure region, and positive pressure feedback channel is also formed on diffusion structure to be connected to live gas import.Gas pressurizer according to the present invention, the pressure of live gas import is held essentially constant, and the supply flow rate of live gas is held essentially constant as a result, and in the gamut of live gas input flow rate, quickly oxygen supply can be reduced to acceptable degree to the flow effect of live gas.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a gas pressure stabilizer for an anesthesia machine and the anesthesia machine with the gas pressure stabilizer.
Background
Fresh gas supply and rapid oxygen supply are basic functions of the gas circuit of the anesthesia machine, and two paths of gas are usually merged into a common channel and then introduced into an anesthesia loop. When the anesthesia machine normally works, only fresh gas is introduced into the anesthesia loop. When the anesthesia machine loop needs to be rapidly supplemented with oxygen, the rapid oxygen supply valve is opened to supply oxygen. After the rapid oxygen supply valve is opened, the flow rate of oxygen is far greater than that of fresh gas during normal work, so that the pressure in the pipeline rises during rapid oxygen supply, the pressure of a fresh gas outlet also rises, and the flow of the fresh gas drops instantly.
In the prior art, the jet flow principle is adopted for rapid oxygen supply. When the fresh gas is at a certain flow, the parameters of the rapid oxygen supply are adjusted so that the influence of the rapid oxygen supply on the fresh gas flow is small. However, when the flow rate of the fresh gas is changed, the adjustment effect of the oxygen supply mode is weakened, and the pressure change of the fresh gas outlet is still large.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a gas regulator for an anesthesia machine, which can weaken the influence of rapid oxygen supply on the flow of fresh gas in the whole range of the flow variation of the fresh gas.
Another object of the present invention is to provide an anesthesia machine having the above gas regulator for an anesthesia machine.
A gas regulator according to an embodiment of the present invention includes: the valve body is provided with a fresh gas inlet and a common gas outlet; a fast oxygen supply channel formed within the valve body, a first end of the fast oxygen supply channel being open to form a fast oxygen supply inlet, a second end of the fast oxygen supply channel being constricted to form a fast oxygen supply jet spout; and a diffusion structure, diffusion structure establishes in the valve body, diffusion structure with quick oxygen suppliment efflux spout spaced apart in order quick oxygen suppliment efflux spout with form the negative pressure region between the diffusion structure, diffusion structure has import and export, export intercommunication common gas outlet, the import with quick oxygen suppliment efflux spout is relative just import fresh gas import with quick oxygen suppliment efflux spout communicates respectively negative pressure region, still be formed with malleation feedback channel on the diffusion structure, malleation feedback channel's first end intercommunication diffusion structure inside and second end intercommunication fresh gas import.
According to the gas stabilizer provided by the embodiment of the invention, the venturi structure consisting of the rapid oxygen supply channel, the diffusion structure and the negative pressure region is arranged, the negative pressure region is communicated with the fresh gas inlet, and the diffusion structure is communicated with the fresh gas inlet through the positive pressure feedback channel, so that the positive pressure applied to the fresh gas inlet after gas mixing can be reduced by the negative pressure generated by the venturi structure, and further the pressure of the fresh gas inlet is basically kept unchanged. The pressure of the fresh gas inlet is basically kept unchanged, so that the supply flow of the fresh gas is basically kept unchanged, and meanwhile, the influence of the rapid oxygen supply on the flow of the fresh gas can be reduced to an acceptable degree in the full range of the input flow of the fresh gas.
In addition, the gas regulator for anesthesia machines according to the present invention may also have the following additional technical features:
in some specific examples of the present invention, the rapid oxygen supply channel includes: the fast oxygen supply jet nozzle comprises an inlet section and an outlet section which are connected with each other, wherein the outlet section is constructed into a straight pipe-shaped structure with a uniform cross section, the cross section size of the outlet section is smaller than that of the inlet section, the free end of the outlet section forms the fast oxygen supply jet nozzle, and the free end of the inlet section forms the fast oxygen supply inlet. From this, under the prerequisite of guaranteeing that quick oxygen suppliment passageway can cooperate regional and diffusion structure of negative pressure to constitute the venturi structure jointly for quick oxygen suppliment passageway simple structure, processing is easy.
Specifically, the rapid oxygen supply jet nozzle is opposite to an inlet of the diffusion structure. Therefore, when the high-speed oxygen is sprayed out from the rapid oxygen supply jet nozzle, the oxygen can be completely sprayed into the diffusion structure.
Preferably, the distance between the fast oxygen jet nozzle and the inlet of the diffuser structure is 1 mm.
In some embodiments of the invention, the diffuser structure is a diffuser tube having an inner wall surface with a cross-sectional dimension that gradually increases in a direction from the inlet toward the outlet. Therefore, the diffusion structure is simple in structure and easy to machine.
Optionally, the diffuser tube is embedded in the valve body; or the diffuser pipe is part of the valve body. When the diffusion tube is embedded in the valve body, the processing difficulty of the gas voltage stabilizer can be reduced, and therefore the processing cost of the gas voltage stabilizer is reduced.
In some embodiments of the invention, the positive pressure feedback channel is an inclined tube structure of constant cross-section. Thereby being convenient for the processing and the molding of the positive pressure feedback channel.
In a preferred embodiment of the invention, the radial dimension of the positive pressure feedback channel is 1 mm.
Advantageously, the distance between the centre of the first end of the positive pressure feedback channel and the inlet is 2-3 mm.
The anesthesia machine according to the embodiment of the present invention comprises the gas pressure stabilizer for the anesthesia machine according to the above-mentioned embodiment of the present invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a gas regulator according to an embodiment of the present invention.
Reference numerals:
a gas stabilizer 100,
A valve body 1, a fresh gas inlet 11, a common gas outlet 12, a first sub-valve body 13, a first chamber 14, a second sub-valve body 15, a second chamber 16, a third sub-valve body 17,
A rapid oxygen supply channel 2, a first end 201 of the rapid oxygen supply channel, a second end 202 of the rapid oxygen supply channel, an inlet section 21, a cylindrical section 211, a conical section 212, an outlet section 22, a rapid oxygen supply inlet 23, a rapid oxygen supply jet nozzle 24,
The diffuser structure 3, the inlet 31, the outlet 32, the positive pressure feedback channel 33, the first end 331 of the positive pressure feedback channel, the second end 332 of the positive pressure feedback channel, the diffuser tube 30, the inner wall surface 301 of the diffuser tube,
A negative pressure area 4,
The distance L1 between the quick oxygen supply jet nozzle and the inlet of the diffusion structure, the radial dimension d1 of the positive pressure feedback channel, the diameter d2 of the outlet section, and the distance L2 between the center of the first end of the positive pressure feedback channel and the inlet
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 illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "radial", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting 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 otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a detachable connection, or an integral connection; may be a mechanical connection; 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 in specific cases to those skilled in the art.
A gas regulator 100 for an anesthesia machine according to an embodiment of the present invention is described below with reference to fig. 1. Wherein the gas regulator 100 is adapted to be connected to an anesthesia loop of an anesthesia machine to provide fresh gas or rapid supplemental oxygen to the anesthesia loop.
The gas regulator 100 for an anesthesia machine according to an embodiment of the present invention, as shown in fig. 1, includes: valve body 1, quick oxygen suppliment passageway 2 and diffusion structure 3.
The valve body 1 is formed with fresh gas inlet 11 and common gas outlet 12, and the fast oxygen suppliment passageway 2 forms in the valve body 1, and the first end 201 of fast oxygen suppliment passageway 2 opens in order to form fast oxygen suppliment entry 23, and the second end 202 shrink of fast oxygen suppliment passageway 2 is in order to form fast oxygen suppliment efflux spout 24.
The diffusion structure 3 is arranged in the valve body 1, and the diffusion structure 3 is spaced apart from the rapid oxygen supply jet nozzle 24 to form a negative pressure region 4 between the rapid oxygen supply jet nozzle 24 and the diffusion structure 3. The diffusion structure 3 is provided with an inlet 31 and an outlet 32, the outlet 32 is communicated with the common air outlet 12, the inlet 31 is opposite to the rapid oxygen supply jet flow nozzle 24, and the inlet 31, the fresh gas inlet 11 and the rapid oxygen supply jet flow nozzle 24 are respectively communicated with the negative pressure area 4. The diffusion structure 3 is further formed with a positive pressure feedback channel 33, a first end 331 of the positive pressure feedback channel 33 is communicated with the inside of the diffusion structure 3, and a second end 332 of the positive pressure feedback channel 33 is communicated with the fresh gas inlet 11.
Specifically, as shown in fig. 1, a fast oxygen supply channel 2, a negative pressure region 4 and a diffusion structure 3 are sequentially arranged in a gas stabilizer 100, the negative pressure region 4 is formed as a cavity, and a fast oxygen supply jet nozzle 24 and an inlet 31 are respectively arranged on opposite side walls of the negative pressure region 4. The fresh gas inlet 11 communicates with the inside of the diffusion structure 3 through the positive pressure feedback passage 33, and the fresh gas inlet 11 also communicates with the negative pressure region 4 to communicate with the inside of the diffusion structure 3.
The common gas outlet 12 is adapted to be connected to an anesthesia circuit of an anesthesia machine for introducing fresh gas and oxygen into the anesthesia circuit flowing into the gas regulator 100.
When the anesthesia machine normally works, the gas stabilizer 100 only supplies fresh gas, at the moment, the fresh gas enters the gas stabilizer 100 from the fresh gas inlet 11, the entered gas is divided into two gas flows, one gas flow flows into the diffusion structure 3 through the positive pressure feedback channel 33, the other gas flow flows into the diffusion structure 3 through the negative pressure area 4, the gas flowing into the diffusion structure 3 flows out from the outlet 32, and finally the gas is led into the anesthesia loop through the common gas outlet 12.
When the anesthesia loop requires rapid oxygen replenishment, the gas regulator 100 supplies fresh gas while rapidly supplying oxygen. At the moment, fresh gas can flow into the diffusion structure 3 through the negative pressure region 4, high-speed oxygen is sprayed into the diffusion structure 3 sequentially through the rapid oxygen supply channel 2 and the negative pressure region 4, and the fresh gas and the high-speed oxygen are mixed in the diffusion structure 3 and then are introduced into the anesthesia loop through the common air outlet 12. Because the common air outlet 12 has pipeline air resistance, the pressure of the mixed gas in the diffusion structure 3 rises to form positive pressure, and the mixed gas applies certain positive pressure to the fresh gas inlet 11 through the positive pressure feedback channel 33. Wherein, quick oxygen suppliment passageway 2, diffusion structure 3 and negative pressure region 4 have constituted typical venturi structure, and when quick oxygen suppliment, high-speed air current from quick oxygen suppliment efflux spout 24 spout into diffusion structure 3 for certain negative pressure has been formed in negative pressure region 4. In this case, the negative pressure can reduce the influence of the positive pressure on the pressure of the fresh gas inlet 11.
Specifically, taking the pressure of the fresh gas input from the fresh gas inlet 11 as P0, the positive pressure applied to the fresh gas inlet 11 by the mixed gas through the positive pressure feedback channel 33 as Δ P1, and the negative pressure formed in the negative pressure region 4 as- Δ P2 as an example, at this time, the pressure at the fresh gas inlet 11 is P0+ Δ P1- Δ P2 due to the combined action of the negative pressure structure and the positive pressure feedback channel 33. After the distance L1 between the fast oxygen jet nozzle 24 and the inlet 31 and the position of the first end 331 of the positive pressure feedback channel 33 are reasonably adjusted, the positive pressure Δ P1 and the negative pressure- Δ P2 can cancel each other out, so that the pressure P0+ Δ P1- Δ P2 at the fresh gas inlet 11 is approximately equal to P0. Thereby, when oxygen is rapidly supplied, the pressure at the fresh gas inlet 11 can be kept substantially constant, so that the supply flow rate of fresh gas is kept substantially constant.
According to the gas regulator 100 of the embodiment of the invention, the venturi structure composed of the rapid oxygen supply channel 2, the diffusion structure 3 and the negative pressure region 4 is arranged, the negative pressure region 4 is communicated with the fresh gas inlet 11, and the diffusion structure 3 is communicated with the fresh gas inlet 11 through the positive pressure feedback channel 33, so that the positive pressure applied to the fresh gas inlet 11 after gas mixing can be reduced by the negative pressure generated by the venturi structure, and further the pressure of the fresh gas inlet 11 is kept unchanged basically. Since the pressure of the fresh gas inlet 11 is kept basically constant, the supply flow rate of the fresh gas is kept basically constant, and meanwhile, the influence of the rapid oxygen supply on the flow rate of the fresh gas can be reduced to an acceptable degree in the full range of the input flow rate of the fresh gas.
In some specific examples of the present invention, as shown in fig. 1, the rapid oxygen supply passage 2 includes an inlet section 21 and an outlet section 22, the inlet section 21 and the outlet section 22 are connected to each other, the outlet section 22 is constructed in a straight tubular structure of a uniform cross section, the cross-sectional dimension of the outlet section 22 is smaller than that of the inlet section 21, the free end of the outlet section 22 constitutes a rapid oxygen supply jet nozzle 24, and the free end of the inlet section 21 constitutes a rapid oxygen supply inlet 23. From this, under the prerequisite of guaranteeing that quick oxygen suppliment passageway 2 can cooperate negative pressure region 4 and diffusion structure 3 to constitute the venturi structure jointly for quick oxygen suppliment passageway 2 simple structure, processing is easy.
Alternatively, as shown in fig. 1, the inlet section 21 comprises a cylindrical section 211 and a conical section 212, the free end of the cylindrical section 211 is open to form the fast oxygen supply inlet 23, the conical section 212 is connected between the cylindrical section 211 and the outlet section 22, and the cross-sectional area of the conical section 212 gradually decreases in a direction from the cylindrical section 211 to the outlet section 22. In a preferred embodiment of the present invention, the outlet section 22 is formed in a cylindrical shape, and the diameter d2 of the outlet section 22 is 1.2 mm.
Specifically, the rapid oxygen supply jet nozzle 24 is directly opposite to the inlet 31 of the diffusion structure 3, and more specifically, the area of the inlet 31 of the diffusion structure 3 is larger than that of the rapid oxygen supply jet nozzle 24, so that when high-speed oxygen is sprayed out from the rapid oxygen supply jet nozzle 24, the oxygen can be completely sprayed into the diffusion structure 3.
Preferably, the distance L1 between the rapid oxygen jet nozzle 24 and the inlet 31 of the diffuser structure 3 is 1mm, that is, the width of the negative pressure region 4 in the direction from the rapid oxygen jet nozzle 24 to the diffuser structure 3 is 1 mm.
In one embodiment of the present invention, as shown in fig. 1, the valve body 1 includes a first sub valve body 13 horizontally disposed and a second sub valve body 15 vertically disposed, and the left end of the first sub valve body 13 is connected to the upper end of the second sub valve body 15. Wherein, the first sub-valve body 13 has a first chamber 14, the right end of the first chamber 14 is open to form a common air outlet 12, and the left end of the first chamber 14 is communicated with the outlet 32 of the diffusion structure 3. The second sub-valve body 15 has a second chamber 16, the lower end of the second chamber 16 is open to form a fresh gas inlet 11, and the upper end of the second chamber 16 is communicated with the negative pressure region 4 and the positive pressure feedback channel 33 respectively.
Further, as shown in fig. 1, the valve body 1 further includes a third sub valve body 17, the fast oxygen supply passage 2 is formed on the third sub valve body 17, optionally, the third sub valve body 17 and the first sub valve body 13 are formed as a pipe member with an equal diameter, and the third sub valve body 17 is disposed coaxially with the first sub valve body 13.
In some embodiments of the present invention, as shown in fig. 1, the diffuser structure 3 is a diffuser tube 30, and the cross-sectional dimension of the inner wall surface 301 of the diffuser tube 30 gradually increases in a direction from the inlet 31 toward the outlet 32. This simplifies the structure of the diffusion structure 3 and facilitates the processing.
Specifically, any cross section of the inner wall surface 301 of the diffuser pipe 30 is formed in a substantially circular shape, and the diameter of the cross section of the inner wall surface 301 of the diffuser pipe 30 increases in equal proportion in the direction from the inlet 31 to the outlet 32.
Alternatively, the diffuser 30 is embedded in the valve body 1, for example, in the example shown in fig. 1, the first chamber 14 is formed in a straight tubular shape of uniform cross section, the left end of the first chamber 14 communicates with the rapid oxygen supply jet nozzle 24, and the left end of the first chamber 14 also communicates with the upper end of the second chamber 16. The diffuser 30 is formed as an independent pipe having the same cross-sectional outer shape as the first chamber 14, and the diffuser 30 can be inserted into the first chamber 14 from the common gas outlet 12 and spaced apart from the left wall of the first chamber 14 to form the negative pressure region 4, thereby reducing the difficulty of processing the gas regulator 100 and reducing the processing cost of the gas regulator 100.
Advantageously, the diffuser pipe 30 and the valve body 1 are in interference fit, so that firm and compact connection between the diffuser pipe 30 and the valve body 1 is ensured, and meanwhile, the diffuser pipe 30 and the valve body 1 are easy to assemble.
Of course, the invention is not limited thereto, and the diffuser 30 may also be a part of the valve body 1, that is, the diffuser 30 and the valve body 1 are an integral molding.
In some embodiments of the present invention, as shown in FIG. 1, the positive pressure feedback channel 33 is an inclined pipe structure with a constant cross section, thereby facilitating the machining of the positive pressure feedback channel 33.
In a preferred embodiment of the present invention, the radial dimension d1 of the positive pressure feedback passage 33 is 1mm, and advantageously, the distance L2 between the center of the first end 331 of the positive pressure feedback passage 33 and the inlet 31 is 2-3 mm.
The anesthesia machine according to the embodiment of the present invention comprises the gas regulator 100 for the anesthesia machine according to the above-described embodiment of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A gas regulator for an anesthesia machine, comprising:
the valve body is provided with a fresh gas inlet and a common gas outlet;
a fast oxygen supply channel formed within the valve body, a first end of the fast oxygen supply channel being open to form a fast oxygen supply inlet, a second end of the fast oxygen supply channel being constricted to form a fast oxygen supply jet spout; and
the diffusion structure is arranged in the valve body, the diffusion structure is spaced from the rapid oxygen supply jet nozzle to form a negative pressure region between the rapid oxygen supply jet nozzle and the diffusion structure, the diffusion structure is provided with an inlet and an outlet, the outlet is communicated with the common gas outlet, the inlet is opposite to the rapid oxygen supply jet nozzle, the inlet, the fresh gas inlet and the rapid oxygen supply jet nozzle are respectively communicated with the negative pressure region, the diffusion structure is also provided with a positive pressure feedback channel, the first end of the positive pressure feedback channel is communicated with the inside of the diffusion structure, and the second end of the positive pressure feedback channel is communicated with the fresh gas inlet; wherein,
the valve body comprises a first sub valve body and a second sub valve body, the first sub valve body is horizontally arranged, the second sub valve body is vertically arranged, the left end of the first sub valve body is connected with the upper end of the second sub valve body, the first sub valve body is provided with a first chamber, the right end of the first chamber is opened to form the common gas outlet, the left end of the first chamber is communicated with the outlet of the diffusion structure, the second sub valve body is provided with a second chamber, the lower end of the second chamber is opened to form the fresh gas inlet, and the upper end of the second chamber is respectively communicated with the negative pressure area and the positive pressure feedback channel;
the diffusion structure is a diffusion pipe, the cross section size of the inner wall surface of the diffusion pipe is gradually increased from the inlet to the outlet, the diffusion pipe is formed into an independent pipe fitting with the same cross section outer contour shape as that of the first chamber, the diffusion pipe is embedded into the first chamber from the common air outlet and is arranged at intervals with the left wall of the first chamber to form the negative pressure area.
2. The gas regulator for anesthesia machines of claim 1, wherein said fast oxygen supply channel comprises: the fast oxygen supply jet nozzle comprises an inlet section and an outlet section which are connected with each other, wherein the outlet section is constructed into a straight pipe-shaped structure with a uniform cross section, the cross section size of the outlet section is smaller than that of the inlet section, the free end of the outlet section forms the fast oxygen supply jet nozzle, and the free end of the inlet section forms the fast oxygen supply inlet.
3. The gas regulator for anesthesia machines of claim 1, wherein said fast oxygen jet nozzle is directly opposite to the inlet of said diffusing structure.
4. The gas regulator for anesthesia machines of claim 3, wherein the distance between said fast oxygen jet nozzle and the inlet of said diffusing structure is 1 mm.
5. The gas regulator for anesthesia machines of claim 1, wherein said positive pressure feedback channel is a constant cross-section inclined tube structure.
6. The gas regulator for anesthesia machines of claim 5, wherein said positive pressure feedback channel has a radial dimension of 1 mm.
7. The gas regulator for anesthesia machines of claim 1, wherein the distance between the center of said first end of said positive pressure feedback channel and said inlet is 2-3 mm.
8. An anesthesia machine comprising a gas pressurizer for an anesthesia machine of any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072384.8A CN104874071B (en) | 2014-02-28 | 2014-02-28 | Gas pressurizer for Anesthesia machine and the Anesthesia machine with it |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072384.8A CN104874071B (en) | 2014-02-28 | 2014-02-28 | Gas pressurizer for Anesthesia machine and the Anesthesia machine with it |
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| CN104874071A CN104874071A (en) | 2015-09-02 |
| CN104874071B true CN104874071B (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410072384.8A Active CN104874071B (en) | 2014-02-28 | 2014-02-28 | Gas pressurizer for Anesthesia machine and the Anesthesia machine with it |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112827037A (en) * | 2020-12-31 | 2021-05-25 | 北京谊安医疗系统股份有限公司 | Anesthetic volatilization device |
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| DE102006049899A1 (en) * | 2005-12-30 | 2007-09-06 | Weinmann Geräte für Medizin GmbH + Co. KG | Respirator for e.g. diver or fire fighter has a two-stage mixer regulator providing base-level feed in parallel with full-flow supply |
| CN101658706A (en) * | 2008-08-27 | 2010-03-03 | 北京谊安医疗系统股份有限公司 | Micro one-way valve |
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| CN202236774U (en) * | 2011-09-28 | 2012-05-30 | 于邦仲 | High-efficiency negative pressure suction air valve |
| CN102770200A (en) * | 2010-02-23 | 2012-11-07 | 旭有机材工业株式会社 | In-line fluid mixing device |
| CN203852693U (en) * | 2014-02-28 | 2014-10-01 | 北京谊安医疗系统股份有限公司 | Gas pressure regulator for anesthesia machines and anesthesia machine with same |
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- 2014-02-28 CN CN201410072384.8A patent/CN104874071B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1338708A (en) * | 1971-07-28 | 1973-11-28 | Vnii Elektrotermicheskogo Obor | Gas mixers |
| CA2170188C (en) * | 1995-03-02 | 1999-10-12 | Raymond Koehler | Anesthesia machine |
| DE102006049899A1 (en) * | 2005-12-30 | 2007-09-06 | Weinmann Geräte für Medizin GmbH + Co. KG | Respirator for e.g. diver or fire fighter has a two-stage mixer regulator providing base-level feed in parallel with full-flow supply |
| CN101658706A (en) * | 2008-08-27 | 2010-03-03 | 北京谊安医疗系统股份有限公司 | Micro one-way valve |
| CN201454438U (en) * | 2009-08-13 | 2010-05-12 | 上海新同惠自动化系统有限公司 | Gas mixer |
| CN102770200A (en) * | 2010-02-23 | 2012-11-07 | 旭有机材工业株式会社 | In-line fluid mixing device |
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| CN104874071A (en) | 2015-09-02 |
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