CN112704793A - Medical breathing probe - Google Patents
Medical breathing probe Download PDFInfo
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- CN112704793A CN112704793A CN202011632569.1A CN202011632569A CN112704793A CN 112704793 A CN112704793 A CN 112704793A CN 202011632569 A CN202011632569 A CN 202011632569A CN 112704793 A CN112704793 A CN 112704793A
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- air path
- smooth
- guide block
- probe
- valve body
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- 239000000523 sample Substances 0.000 title claims abstract description 36
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 23
- 238000005070 sampling Methods 0.000 claims abstract description 35
- 239000012528 membrane Substances 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000000741 silica gel Substances 0.000 claims description 18
- 229910002027 silica gel Inorganic materials 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 16
- 230000000241 respiratory effect Effects 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 22
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000009423 ventilation Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
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- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention belongs to the technical field of medical instruments, and particularly relates to a medical respiration probe which comprises a diaphragm, a diaphragm valve core, a first smooth air passage guide block, a second smooth guide block, a valve body and a sampling device, the invention relates to a valve with a large flow range, which is characterized in that a first smooth air passage guide block and a second smooth guide block are arranged on two sides of a valve body, a membrane is arranged on a valve seat of the valve body through a membrane valve core, a sampling device is higher than the plane of a main air passage and is arranged above the first smooth air passage guide block and the second smooth guide block, the membrane can change a gap along with pressure and flow, the mechanical structure of a drift diameter is increased, the scheme of reducing local resistance of a smooth air passage and the precision detection of a variable drift diameter (gap) wide linear region are realized, the continuous measurement of small flow, high precision and large flow range is realized, and the detection air passage is in the same direction with a main air port due to.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a medical breathing probe.
Background
In the technical performance indexes of medical breathing machines and respiratory anesthesia machines, flow detection accuracy and respiratory resistance are two crucial performance standards. It is directly related to the user experience of the product and the life safety of the patient. The traditional fixed-drift-diameter medical breathing probe has a small linear relation interval and large local resistance in the detection work and becomes a main factor for detecting and measuring errors. Therefore, how to accurately measure the gas flow becomes a key part of the equipment manufacturing. Related products in the market at present mainly use a fixed-drift-diameter medical breathing probe. At present, the detection method of the medical breathing probe detects the pressure difference between two sides of the fixed-drift-diameter diaphragm, and obtains the flow by calculation, however, the flow detection method of the fixed-drift-diameter medical breathing probe has the following disadvantages: 1. the linear interval is small, and the local respiratory resistance is large; 2. the measurement precision is poor; 3. the processing difficulty is high; 4. it is not compatible with the measurement of small flow, high precision, large flow and large range.
Disclosure of Invention
In order to solve the defects of the problems, the invention provides a medical respiration probe.
The specific technical scheme of the invention is as follows:
the medical respiration probe comprises a membrane, a membrane valve core, a first smooth air passage guide block, a second smooth guide block, a valve body and a sampling device, wherein the first smooth air passage guide block and the second smooth guide block are arranged on two sides of the valve body, the membrane is arranged on a valve seat of the valve body through the membrane valve core, the sampling device is higher than a main air passage plane and is arranged above the first smooth air passage guide block and the second smooth guide block, wherein,
the diaphragm comprises a swinging part, a connecting part and a fixing part, the swinging part is connected with one end of the connecting part, the other end of the connecting part is connected with the fixing part, the connecting part is of a slender structure, the end of the swinging part, which is far away from the connecting part, is of an arc structure,
the valve body is far away from valve carrier end and extends the arch-shaped piece perpendicularly to the swing portion and keep away from the connecting portion end, the arch-shaped end of arch-shaped piece and the swing portion keep away from the radian phase-match of connecting portion end.
Preferably, the swinging part is provided with concave notches along two sides of the connecting part near the end of the connecting part.
Preferably, the membrane is a corrosion resistant material.
Preferably, the fixed part of the diaphragm is fixed on the valve seat of the valve body by a valve core and a pressing block through screws.
Preferably, the first smooth air passage guide block and the second smooth guide block are both of a U-shaped curved surface structure.
Preferably, the sampling device comprises a first sampling channel and a second sampling channel; the first sampling channel comprises a first air path and a second air path, one end of the first air path is vertically connected with one end of the second air path, the first air path is arranged above the first smooth air path guide block, and the arrangement direction of the second air path is the same as that of the main air path; the second sampling channel comprises a third air path and a fourth air path, the third air path is connected with the fourth air path, the third air path is arranged above the second smooth air path guide block, and the fourth air path is arranged in the same direction as the main air path.
Preferably, a silica gel sealing assembly is arranged at the joint of the third air path and the fourth air path, and a turning mechanism is arranged in the silica gel assembly and used for turning the air paths and is parallel to the main air path.
Preferably, the other end of the second air path is sealed by the silica gel sealing assembly and the two lips, and the end, far away from the third air path, of the fourth air path is sealed by the silica gel sealing assembly and the two lips.
Preferably, the medical respiratory probe further comprises a protective net, and the protective net is arranged in the inlet and outlet main air port valve block.
Compared with the prior art, the invention has the beneficial effects that:
the diaphragm of the invention can change the clearance along with the pressure and the flow, the mechanical structure of the drift diameter is increased, the scheme of smooth air guide passage for reducing the local resistance and the precision detection in the linear area with the variable drift diameter (clearance) width are realized, the continuous measurement with small flow, high precision, large flow and wide range is realized, and the blind plugging installation can be realized because the detection air passage turns to the same direction as the main air vent.
Drawings
FIG. 1 is an overall schematic view of a medical respiratory probe of the present invention;
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic diagram of a protective net of the medical respiration probe according to the present invention;
FIG. 4 is a top view of a medical respiratory probe of the present invention;
FIG. 5 is a schematic cross-sectional view B-B of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic cross-sectional view of a first sampling channel of the respiratory probe of the present invention;
FIG. 7 is a schematic cross-sectional view of a second sampling channel of the respiratory probe of the present invention;
FIG. 8 is a perspective view of the present invention respiratory probe with a turn mechanism built into the silicone assembly;
FIG. 9 is a schematic frame diagram of a medical respiratory probe of the present invention;
reference numerals:
1. the gas sampling device comprises a diaphragm, 2, a swinging part, 3, a connecting part, 4, a fixing part, 5, a concave notch, 6, a valve body, 7, an arch-shaped part, 8, a first smooth air passage guide block, 9, a second smooth guide block, 10, a sampling device, 11, a first sampling channel, 12, a first air passage, 13, a second air passage, 14, a second sampling channel, 15, a third air passage, 16, a fourth air passage, 17, a protective net, 18, a screw, 19, a main air passage, 20, a protective net, 21, a silica gel sealing component, 22, a first vent valve body, 23, a second vent valve body, 24, a detection air hole, 25, a first detection air hole, 26 and a second detection air hole.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
The invention provides a medical breathing probe, which adopts a variable-gap diaphragm 1 and a smooth airway detection scheme, and specifically designs a group of diaphragm valve cores with variable gaps formed by bending a swan neck, wherein the diaphragm 1 is provided with a bent swan neck to increase the measurement precision, the structure diagram of the variable-diameter medical breathing probe is shown in figures 1-9, the medical breathing probe consists of a plurality of metal valve blocks and silica gel sealing parts, the metal valve blocks are used for fixing an airway and the diaphragm valve cores together, the medical breathing probe comprises a diaphragm 1, a diaphragm valve core, a first smooth airway guide block 8, a second smooth airway guide block 9, a valve body 6 and a sampling device 10, the two sides of the valve body 6 are provided with the first smooth airway guide block 8 and the second smooth airway guide block 9, and the first smooth airway guide block 8 and the second smooth airway guide block 9 are both of U-shaped curved surface structures. Wherein, the end of the valve body 6 far away from the valve seat can be of an arch structure.
The diaphragm 1 is arranged on a valve seat of a valve body 6 through a diaphragm valve core, the diaphragm comprises a swinging part 2, a connecting part 3 and a fixing part 4, the swinging part 2 is connected with one end of the connecting part 3, the other end of the connecting part 3 is connected with the fixing part 4, the structure of the connecting part 3 is a slender structure, the end of the swinging part 2 far away from the connecting part is an arc-shaped structure, the end of the valve body 6 far away from the valve seat vertically extends out of an arch-shaped part 7 to the end of the swinging part 2 far away from the connecting part, the arch-shaped end of the arch-shaped part 7 is matched with the radian of the swinging part 2 far away from the connecting part end, the swinging part 2 is close to the connecting part end, concave notches 5 are arranged along the two sides of the connecting part, the fixing part 4 of the diaphragm 1 is fixed on the valve seat of, the diaphragm 1 and the arch part have a detection gap, and the flow change is sensitive, so that the detection precision is improved. And the diaphragm 1 is assembled and fixed through the two clamping plates, so that the assembly consistency of the probe is facilitated.
Connecting portion 3 of diaphragm 1 is thin neck-shaped structure, adopts the crooked latus rectum that leads to of diaphragm atress to change, and when the flow is less, the diaphragm just produces little crooked, and the latus rectum is less, and it is higher to detect the precision. In the process of flow and pressure increase, the diaphragm continuously bends, the effect of increasing the drift diameter is achieved, and the large-range measurement can be compatible. Meanwhile, as the diaphragm is bent, the drift diameter is increased, the local resistance is greatly reduced, and the measuring device plays a more critical role in improving the measuring precision and the measuring range.
The sampling device 10 is higher than the plane of the main air path and is arranged above the first smooth air path guide block 8 and the second smooth guide block 9, wherein the sampling device 10 comprises a first sampling channel 11 and a second sampling channel 14; the first sampling channel 11 comprises a first air path 12 and a second air path 13, one end of the first air path 12 is vertically connected with one end of the second air path 13, the first air path 12 is arranged above the first smooth air path guide block 8, and the arrangement direction of the second air path 13 is the same as that of the main air path; the second sampling channel 14 comprises a third air path 15 and a fourth air path 16, the third air path 15 is connected with the fourth air path 16, the third air path 15 is arranged above the second smooth air path guide block 9, and the direction of the fourth air path 16 is the same as that of the main air path.
And a silica gel sealing assembly 21 is arranged at the joint of the third air path 15 and the fourth air path 16, and a turning mechanism is arranged in the silica gel assembly 21 and is used for turning the air paths and is parallel to the main air path 19. The other end of the second air path 13 is sealed by a silica gel sealing assembly and two lips, and the end, far away from the third air path 15, of the fourth air path 14 is sealed by a silica gel sealing assembly and two lips.
The silica gel sealing element has the advantages that the purpose of reducing the leakage of the detected gas is achieved, the direction of the sampling air passage is changed from being perpendicular to the main air passage to being parallel to the main air passage 19, double-lip sealing is designed, the detection pipeline is inserted in a blind mode, and the sealing effect is good.
The medical breathing probe further comprises a protective net 20, the protective net 20 is arranged in the inlet and outlet main air port valve block and is connected through threads, and a closed space is formed in the middle of the protective net 20 through a silica gel gasket and a groove. The main air passage is designed with a protection net 20 for preventing foreign materials from damaging the membrane. When gas flows in from the gas inlet, the gas passes through the smooth metal gas guide channel, passes through the membrane valve core and the membrane 1 and reaches the gas outlet. Because both sides all have the air flue guide block, reducible local resistance, simultaneously because the variable clearance of diaphragm, the resistance further reduces. When small flow enters the probe, the drift diameter is small, and the measurement precision is high; when a large flow passes through the probe, the diaphragm is properly bent, the drift diameter is enlarged, and a large measuring range can be measured. When the inlet and outlet detection interface detects pressure difference, flow change can be sensitively detected according to the pressure value and the pressure difference, and the effect of breathing resistance is reduced. This structural change waits to detect two side gas circuit directions, and sampling device 10 exceeds main gas circuit take the altitude, changes the sampling point and sets up the position, reduces sampling district turbulent flow influence, improves the sampling and detects the precision, and the silica gel sealing member detects mouthful and adopts two lips to seal with the pipe, can realize equipment blind plug installation, promotes assembly efficiency greatly.
The medical breathing probe comprises a first ventilation valve body 22 and a second ventilation valve body 23, the first ventilation valve body 22 is connected with the second ventilation valve body 23, the first ventilation valve body 22 and the second ventilation valve body 23 are both of a hollow structure, a hollow mechanism of the first ventilation valve body 22 is a main air passage 19, the second ventilation valve body 23 is used for arranging a valve body 6, a first smooth air passage guide block 8, a second smooth guide block 9, a sampling device 10, a silica gel sealing assembly 21 and other accessories which are needed relatively, in addition, a detection air hole 24 is arranged on the second ventilation valve body, the detection air hole comprises a first detection air hole 25 and a second detection air hole 26, the first detection air hole 25 is the air outlet end of the second air passage 13, and the second detection air hole 26 is the air outlet end of the fourth air passage 16.
Conventional technical knowledge in the art can be used for the details which are not described in the present invention.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A medical respiration probe comprises a membrane, a membrane valve core, a first smooth air passage guide block, a second smooth guide block, a valve body and a sampling device, and is characterized in that the first smooth air passage guide block and the second smooth guide block are arranged on two sides of the valve body, the membrane is arranged on a valve seat of the valve body through the membrane valve core, the sampling device is higher than a main air passage plane and is arranged above the first smooth air passage guide block and the second smooth guide block, wherein,
the diaphragm comprises a swinging part, a connecting part and a fixing part, the swinging part is connected with one end of the connecting part, the other end of the connecting part is connected with the fixing part, the connecting part is of a slender structure, the end of the swinging part, which is far away from the connecting part, is of an arc structure,
the valve body is far away from valve carrier end and extends the arch-shaped piece perpendicularly to the swing portion and keep away from the connecting portion end, the arch-shaped end of arch-shaped piece and the swing portion keep away from the radian phase-match of connecting portion end.
2. The medical respiratory probe of claim 1, wherein the swinging portion is provided with concave cuts along both sides of the connecting portion near the end of the connecting portion.
3. The medical respiratory probe of claim 1, wherein the diaphragm is a corrosion resistant material.
4. The medical respiration probe of claim 1, wherein the fixing portion of the diaphragm is fixed to the valve seat of the valve body by a screw using a valve core and a pressure block.
5. The medical respiratory probe of claim 1, wherein the first and second smooth airway guide blocks are both U-shaped curved structures.
6. The medical respiratory probe of claim 1, wherein the sampling device comprises a first sampling channel and a second sampling channel; the first sampling channel comprises a first air path and a second air path, one end of the first air path is vertically connected with one end of the second air path, the first air path is arranged above the first smooth air path guide block, and the arrangement direction of the second air path is the same as that of the main air path; the second sampling channel comprises a third air path and a fourth air path, the third air path is connected with the fourth air path, the third air path is arranged above the second smooth air path guide block, and the fourth air path is arranged in the same direction as the main air path.
7. The medical respiration probe of claim 6, wherein a silica gel sealing component is arranged at the joint of the third air path and the fourth air path, and a turning mechanism is arranged in the silica gel component and used for turning the air paths and is parallel to the main air path.
8. The medical respiration probe of claim 6, wherein the other end of the second air path is sealed by a silica gel sealing component and two lips, and the end of the fourth air path far from the third air path is sealed by a silica gel sealing component and two lips.
9. The medical respiratory probe of claim 1, further comprising a protective mesh disposed within the inlet and outlet main orifice valve block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011632569.1A CN112704793A (en) | 2020-12-31 | 2020-12-31 | Medical breathing probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011632569.1A CN112704793A (en) | 2020-12-31 | 2020-12-31 | Medical breathing probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112704793A true CN112704793A (en) | 2021-04-27 |
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ID=75547821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011632569.1A Pending CN112704793A (en) | 2020-12-31 | 2020-12-31 | Medical breathing probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112704793A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185615A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Diameter-variable orifice-plate flowmeter |
| CN104874074A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Respiratory air sampling probe and anesthesia machine with same |
| EP3090774A1 (en) * | 2015-05-08 | 2016-11-09 | Shenzhen Envisen Industry Co., Limited | Bi-lumen breathing circuit assembly |
| CN215231218U (en) * | 2020-12-31 | 2021-12-21 | 北京谊安医疗系统股份有限公司 | Medical breathing probe |
-
2020
- 2020-12-31 CN CN202011632569.1A patent/CN112704793A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185615A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Diameter-variable orifice-plate flowmeter |
| CN104874074A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Respiratory air sampling probe and anesthesia machine with same |
| EP3090774A1 (en) * | 2015-05-08 | 2016-11-09 | Shenzhen Envisen Industry Co., Limited | Bi-lumen breathing circuit assembly |
| CN215231218U (en) * | 2020-12-31 | 2021-12-21 | 北京谊安医疗系统股份有限公司 | Medical breathing probe |
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