CN204479255U - The leak test system of coaxial breathing hose leak test, Connection Element and assembly - Google Patents
The leak test system of coaxial breathing hose leak test, Connection Element and assembly Download PDFInfo
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- CN204479255U CN204479255U CN201520014458.2U CN201520014458U CN204479255U CN 204479255 U CN204479255 U CN 204479255U CN 201520014458 U CN201520014458 U CN 201520014458U CN 204479255 U CN204479255 U CN 204479255U
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2846—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for tubes
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- 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
- A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
- A61M16/0816—Joints or connectors
- A61M16/0833—T- or Y-type connectors, e.g. Y-piece
-
- 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
- A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
- A61M16/0875—Connecting tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/087—Measuring breath flow
-
- 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
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
-
- 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
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/15—Detection of leaks
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
-
- 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
- A61M2209/00—Ancillary equipment
- A61M2209/02—Equipment for testing the apparatus
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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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model relates to a kind of leak test system of coaxial breathing hose leak test, Connection Element and assembly, for the respiratory system of the breathing of patient breathing hose used with inner flexible tube and the outer flexible tube surrounding inner flexible tube, wherein, outer flexible tube is connected with environment facies.For patient respiratory respiratory system used leak test system with: for providing the breathing apparatus of breathe air, it has for the air-breathing interface of supply of breathing air and the expiration interface for deriving breathe air; The coaxial breathing hose of examine; And inner flexible tube-closure elements, it is configured to the common connection element place being installed in coaxial breathing hose, wherein, inner flexible tube-closure elements is closed inner flexible tube and the fluid be preferably formed between outer flexible tube with environment airtightly and is connected at the second hose end place.
Description
Technical field
The present invention relates to a kind of method of leak test of coaxial breathing hose, for the breathing hose that the respiratory system of the breathing of patient is used, there is inner flexible tube and surround outer flexible tube, a kind of leak test system of the respiratory system used for patient respiratory and a kind of Connection Element of the leak test for coaxial breathing hose of inner flexible tube.
Background technology
The breathing hose of patient respiratory respiratory system used is become known for by prior art, be provided with two flexible pipes wherein, breathe air guided into patient's (air-breathing) on the one hand by them and on the other hand breathe air derived (expiration) from patient.Use breathing hose come to perform leak test, prevent with environmental air pollution thus.
In order to the leak test at air-breathing interface (Inspirationsanschluss) place, breathing apparatus traditional accordingly can provide the overvoltage of breathe air and have for tonometric measuring equipment at expiration interface.If the traditional breathing tube system being connected in the single tube of air-breathing interface or expiration interface with two is respectively closed airtightly at the breathing equipment place of patient, then this is crossed to be pressed in whole breathing tube system and spreads.Therefore check whether whole system has towards the leakage position of environment by measuring at the pressure of expiration interface.
In addition known coaxial breathing hose, its have for air-breathing inner flexible tube and surround the outer flexible tube for exhaling of inner flexible tube.In like fashion, on the one hand can the exhalation air in outer flexible tube and carry out heat interchange between the suction air in inner flexible tube, heat inhaled air thus, improves the observability at patient place by the coaxial configuration of flexible pipe on the other hand and provides space by the concentrated of flexible pipe.But in the leak test for getting rid of by environmental air pollution, not checking and between inner flexible tube to outer flexible tube, to breathe out air and suck the mixing of air.
Summary of the invention
The object of this invention is to provide a kind of method of the leak test for coaxial breathing hose, a kind of leak test system of the respiratory system used for patient respiratory and a kind of Connection Element of the leak test for coaxial suction flexible pipe, it prevents between inner flexible tube with outer flexible tube, breathing out air and sucking mixing of air.
The present invention introduces a kind of method of leak test of coaxial breathing hose, for the respiratory system of the breathing of patient breathing hose used with inner flexible tube and the outer flexible tube surrounding inner flexible tube, the method is with the method step of the leak test of inner flexible tube and the leak test of whole coaxial breathing hose, wherein, outer flexible tube is connected with environment facies.By checking that the sealing of inner flexible tube can get rid of the leakage position at inner flexible tube place, be in respiratory the mixing that may occur exhalation air and suck air at it.
According to a method variant, inner flexible tube and outer flexible tube have respectively at the first hose end place air-breathing interface for being connected to breathing apparatus or to expiration interface connection element and there is at the second hose end place common connection element, and the connection element of the first hose end of inner flexible tube is connected to the air-breathing interface of breathing apparatus in the leak test of inner flexible tube, inner flexible tube is closed airtightly at the second hose end place, fluid sensor is linked with inner flexible tube and outer flexible tube is connected with environmental pressure, breathe air to be introduced in inner flexible tube by air-breathing interface and measure pressure and/or the flow of the breathe air in inner flexible tube.In like fashion, leak test is made to become possibility by the measurement of fluid sensor.Prevent breathing hose by introducing breathe air via the air-breathing interface of breathing apparatus, the pollution of the inner flexible tube for air-breathing is especially set.
Fluid sensor is such as the combination of pressure transducer or flow sensor, especially volume or mass flow sensor or such sensor.Also that multiple identical type can be set at the different parts place of breathing apparatus or leak test system or dissimilar fluid sensor.
Fluid sensor is such as pressure transducer, and it measures the pressure differential between pressure in the breathing hose of examine and environmental pressure or another reference pressure.Preferably in breathing hose, apply overvoltage, to avoid surrounding air to be drawn in breathing hose.But also may in the region of the examine of breathing hose, apply negative pressure and measure corresponding pressure differential.
Also may fluid sensor be flow sensor, it measures the flow by the breathe air of the breathing hose of examine.Such as the supply of breathe air to be adjusted on certain pressure and to measure the corresponding discharge of the supply of breathe air.Alternatively can pump air from the breathing hose of examine, such as, by the expiration interface of breathing apparatus, and measure the corresponding flow of the air pumped.
According to other method variant, fluid sensor is arranged on the air-breathing interface of breathing apparatus and closes inner flexible tube at the second hose end place airtightly by inner flexible tube-closure elements.This structure makes simple procedure become possibility, because only the interface of inner flexible tube must be connected with the air-breathing interface of breathing apparatus for the first leak test step.
Especially inner flexible tube-closure elements can be arranged on the common connection element place of coaxial breathing hose and the fluid be formed between outer flexible tube with environmental pressure is connected.In like fashion, the fluid guaranteeing between outer flexible tube with environmental pressure by inner flexible tube-closure elements self be connected and make leak test conform with the regulations perform simplification.
Alternatively, fluid sensor can be arranged on the expiration interface of breathing apparatus and inner flexible tube can be connected with the expiration interface of breathing apparatus by Connection Element at the second hose end place, wherein, Connection Element is fixed on the common connection element place of coaxial breathing hose and the fluid be preferably formed between outer flexible tube with environmental pressure is connected.Traditional breathing apparatus can be utilized in like fashion to perform the leak test of coaxial breathing hose, and do not need new sensing device or the controller of breathing apparatus.
According to a preferred method variant, in the leak test of whole coaxial breathing hose, the connection element of the first hose end is connected in breathing apparatus air-breathing interface and at expiration interface, and close the common connection element of the second hose end airtightly, wherein, the fluid be formed between inner flexible tube with outer flexible tube by common connection element is connected, fluid sensor and inner flexible tube or outer flexible tube are linked, and breathe air are introduced in inner flexible tube and outer flexible tube and the pressure measured in inner flexible tube or outer flexible tube and/or flow by air-breathing interface.This allows to the sealing checking whole coaxial breathing hose simply.
The present invention provides a kind of leak test system of the respiratory system used for patient respiratory in addition.This leak test system comprises: for providing the breathing apparatus of breathe air, and it has for the air-breathing interface of supply of breathing air and the expiration interface for deriving breathe air; The coaxial breathing hose of examine, it has the outer flexible tube of inner flexible tube and the xsect with annular, wherein, inner flexible tube and outer flexible tube have respectively at the first hose end place and are configured to be coupled to the air-breathing interface of breathing apparatus or the connection element of expiration interface respectively and the common connection element at the second hose end place with the breathing equipment place being configured to be coupled to patient; And inner flexible tube-closure elements, it is configured to the common connection element place being installed in coaxial breathing hose, wherein, inner flexible tube-closure elements is closed inner flexible tube and the fluid be preferably formed between outer flexible tube with environment airtightly and is connected at the second hose end place.Guarantee the sealing of the second hose end of inner flexible tube on the one hand by the structure of closure elements and preferably guarantee that the fluid between outer flexible tube with environment is connected on the other hand.Can set up overvoltage in inner flexible tube in like fashion, and the connection of this fluid is guaranteed in outer flexible tube, keep identical pressure, because the breathe air flowing through possible leakage position connects by this fluid flow out to environment from outer flexible tube.
Alternatively, can be provided with inner flexible tube-closure elements, it is also closed common connection element and therefore also closes outer flexible tube at the second hose end place.In this case, the first hose end place that is configured in that outer flexible tube to the fluid of environment connects is realized by the connection element of outer flexible tube.
According to another form of implementation, common connection element has the open cross-section of inner flexible tube, the open cross-section of the annular of outer flexible tube and the common open cross-section of common point of attachment, wherein, the diameter of common open cross-section is greater than the diameter of the open cross-section of inner flexible tube.In like fashion, inner flexible tube-closure elements can be introduced in common connection element through common open cross-section in a straightforward manner and to close the open cross-section of inner flexible tube.
In addition, the present invention relates to a kind of Connection Element of the leak test for coaxial breathing hose, coaxial breathing hose is with having the inner flexible tube of interior xsect and having the outer flexible tube of annular xsect, they have common connection element at a hose end place, it is configured to the breathing equipment place being coupled to patient, wherein, Connection Element is configured to tubularly to be connected to form fluid between the air-breathing of inner flexible tube and breathing apparatus or expiration interface or fluid sensor, and Connection Element comprises the first section of the interior cross-section being configured to abut in airtightly inner flexible tube, be configured to extend through the second section of common connection element in the axial direction and be configured to be coupled to the 3rd section at air-breathing or expiration interface or fluid sensor place.Such Connection Element allows to utilize traditional breathing apparatus to perform according to method of the present invention when not changing sensing device or the controller of breathing apparatus.
According to a preferred form of implementation, the second sector architecture fluid be shaped as between outer flexible tube with environment of tubular Connection Element is connected and the groove having surface structure on its outer surface, stretch especially in the axial direction, and it is configured to the fluid be formed between outer flexible tube with environment together with common connection element and is connected.Connection Element guarantees that the fluid between outer flexible tube with environment is connected, so make to prevent reveal check in the measuring error that caused by maloperation, thus make leak test perform simplification.In like fashion, guarantee that fluid connects by the surface structure of Connection Element.
The subregion on surface especially can be configured to abut in common connection element place in the region of the second section of Connection Element, improve the stability of the connection of Connection Element and common connection element thus and especially prevent Connection Element from waving in common connection element, wherein, other subregion and this common connection element on surface construct at least one passage, and its fluid be formed between outer flexible tube with environment is connected.
In addition, the present invention relates to a kind of assembly of the leak test for coaxial breathing hose, it Connection Element illustrated above comprising and closure elements, wherein, closure elements is configured to the common connection element closing the second hose end airtightly, wherein, the fluid be formed between inner flexible tube with outer flexible tube by common connection element is connected.Such assembly allows to utilize breathing apparatus and breathing hose coaxial accordingly to perform above-mentioned leak test method.Preferably, this assembly comprises the second closure elements (inner flexible tube-closure elements) in addition, and it is configured to close inner flexible tube airtightly at the second hose end place, and wherein, the fluid that the second closure elements is formed between outer flexible tube with environment is connected.This assembly especially comprises Connection Element, first and second closure elements and coaxial breathing hose.
Accompanying drawing explanation
Other feature and advantage of the present invention are drawn by the accompanying drawing of ensuing explanation and its reference.Wherein:
Fig. 1 shows the coaxial breathing hose for leak test system according to the present invention;
Fig. 2 shows coaxial breathing hose and the schematic diagram of breathing apparatus;
Fig. 3 shows the detailed view of the coaxial breathing hose with leakage position;
Fig. 4 show for coaxial breathing hose according to Connection Element of the present invention;
Fig. 5 shows the cut-open view of the Connection Element in Fig. 4;
Fig. 6 shows the detailed view of the common connection element of the Connection Element in coaxial breathing hose and Fig. 4;
Fig. 7 shows another detailed view of the common connection element of the Connection Element that band connects to some extent;
Fig. 8 shows the first leak test step of the leak test method implementing variant according to first;
Fig. 9 shows the second method step of the leak test method implementing variant according to first;
Figure 10 shows the third method step of the leak test method implementing variant according to first;
Figure 11 shows and implements the closure elements of variant and the detailed view of common connection element according to second;
Figure 12 shows the first leak test step of the leak test method implementing variant according to second; And
Figure 13 shows the second leak test step of the leak test method implementing variant according to second.
List of numerals
1 leak test system
10 coaxial breathing hoses
12 inner flexible tubes
14 outer flexible tubes
16 connection elements (inner flexible tube)
18 connection elements (outer flexible tube)
20 first hose end
22 second hose end
24 common connection elements
26 breathing equipments
28 breathing apparatus
30 air-breathing interfaces
32 expiration interfaces
33 fluid sensors
34 leakage positions
36 critical areas
38 Connection Elements
40 percolation passages
42 first sections
44 second sections
46 the 3rd sections
47 surface structures
48 closure elements
50 inner flexible tubes-closure elements
52 points of attachment
54 connectors
56 inner flexible tube structural details.
Embodiment
Fig. 1 shows with the cut-open view of inner flexible tube 12 with the coaxial breathing hose 10 of the outer flexible tube 14 of encirclement inner flexible tube 12.Preferably, inner flexible tube 12 and outer flexible tube 14 are configured with the xsect of circular, but also can arrange other xsect geometry.Therefore outer flexible tube 14 is obtained to the flow cross section of annular.
First and second connection elements 16,18 are configured in the first hose end 20 place and allow to optionally be connected to inner flexible tube 12 or outer flexible tube 14 place.In figure in FIG, the second connection element 18 is only shown piecemeal, it is associated with outer flexible tube 18.
Be configured with common connection element 24 at the second hose end 22 place, it is configured to breathing equipment 26 place being coupled to patient.Breathing equipment 26 is illustrated by angle-shaped piece in FIG, and such as breathing apparatus or Intubaction device (not shown for the purpose of clarity here) are connected to this angle-shaped piece place.
Inner flexible tube 12 and outer flexible tube 14 are configured to corrugated flexible hose in shown form of implementation in the zone line of breathing hose.In like fashion, flexible pipe is flexible and dimensionally stable.
Fig. 2 shows coaxial breathing hose 10 and for providing the breathing apparatus 28 of breathe air.Breathing apparatus has for the air-breathing interface 30 of supply of breathing air and the expiration interface 32 for deriving breathe air.
The first connection element 16 be associated with inner flexible tube 12 is connected with air-breathing interface 30, and the second connection element 18 be associated with outer flexible tube 14 is connected with expiration interface 32.
When air-breathing, therefore breathe air flow to the breathing equipment 26 of patient via common connection element 24 by inner flexible tube 12 from air-breathing interface 30.When exhaling, the air of exhalation flow to the expiration interface 32 of breathing apparatus 28 by outer flexible tube 14 via common connection element 24 from the breathing equipment 26 of patient.
Relatively with traditional respiratory system of two flexible pipes for air-breathing and expiration be separated, coaxial breathing hose 10 has this advantage, and namely this system saves space and more visible.
In addition, the suction air flowing through inner flexible tube 12 is flow through the air heat of the exhalation of the heat of outer flexible tube 14 and therefore more comfortable for patient.
The path of suction air represents with solid arrow in FIG and the path of air of breathing out represents with dotted arrow in FIG.
Fig. 3 shows the detailed view of the breathing hose in Fig. 1, wherein, there is leakage position 34 in figure 3 in inner flexible tube 12.At leakage position 34 place, air can arrive inner flexible tube 12 from outer flexible tube 14, and thus, the exhalation air of being breathed out by patient in outer flexible tube 14 mixes with the suction air flowing through inner flexible tube 12.In like fashion, CO in the suction air at breathing equipment 26 place
2concentration can raise and O
2concentration declines.Therefore section 36 between leakage position 34 and common connection element forms critical area, and the mixing of exhalation air and suction air can occur wherein.
Figure 4 and 5 show Connection Element 38, and it allows to optionally be connected in common connection element 24 place for inner flexible tube 12.This Connection Element 38 is configured to tubular, and wherein, percolation passage 40 extends through Connection Element 38 in the axial direction.
Connection Element 38 comprises the first section 42 of the interior cross-section being configured to abut in airtightly inner flexible tube 12 and is configured to define the second section 44 be connected with the fluid between environment at outer flexible tube 14 and the 3rd section 46 being configured to be coupled to air-breathing interface 30 or expiration interface 32 or the independent measuring equipment place for leak test.
In shown form of implementation, the first section 42 taper constructs gradually taperingly, makes thus in the end regions being easy to introduce inner flexible tube 12.
Connection Element 38 can completely or partially be formed by resilient material, makes the excellent sealing between inner flexible tube 12 and Connection Element 38 and between Connection Element 38 and air-breathing interface 30 or expiration interface 32 become possibility thus.
Second section 44 is configured to guarantee to be connected with the fluid between environment at outer flexible tube 14.In like fashion, air can be passed out to environment from outer flexible tube 14 and constant pressure in outer flexible tube corresponding to environmental pressure.In shown form of implementation, the overall diameter of the second section is less than the interior diameter of the common open cross-section of common connection element 24.In like fashion, between second section 44 and the common connection element 24 of breathing hose 10 of Connection Element 38, produce the flow channel of general toroidal.
In addition, the second section 44 of Connection Element 38 has surface structure 47, wherein, is provided with groove on the outer surface.Therefore surface structure 47 is formed in the flow channel between the second section 44 of Connection Element 38 and the common connection element 24 of breathing hose 10.Connection Element 38 and common connection element 24 especially also size can be set to and make the second section 44 abut in connection element 24 place to a great extent with its outside surface and therefore be stablized, wherein, the fluid connection to environment is formed by the flow channel in the groove extended in the axial direction of surface structure 47.Alternative surface structure is also possible, such as, can form multiple flow channel or can be provided with other shape and the trend of flow channel.
Also possible that, surface structure is provided with in form of implementation shown in the overall diameter that the interior diameter of the common open cross-section of the relatively common connection element 24 with the second section reduces, it forms at least one support component, and this support component is configured to the interior diameter place of the common open cross-section abutting in common connection element 24 and in common connection element 24, makes Connection Element 38 stablize.
Alternatively it is possible that Connection Element 38 is configured to the inner side place abutting in common connection element 24 without surface structure 47 with the second section 44 hermetically.Therefore, Connection Element 38 closes outer flexible tube 14 in the second hose end 22.Be connected in this case by being formed at the connection element 18 of the first hose end 20 place outer flexible tube 14 with the fluid between environment at outer flexible tube 14.
Fig. 6 shows at Connection Element 38 by the breathing hose 10 before being connected with inner flexible tube 12 and Connection Element 38.In order to connect Connection Element 38, Connection Element 38 is inserted through in the direction of the arrow common connection element 24 common open cross-section and insert inner flexible tube 12 opening in until taper ground tapered first section 42 abut in inner flexible tube 12 place hermetically.
Show the Connection Element 38 be connected with inner flexible tube 12 in the figure 7.This Connection Element makes by the percolation passage 40 of Connection Element 38 out and become possibility to the fluid stream in inner flexible tube 12, as shown in by solid line double-head arrow.
Meanwhile, Connection Element 38 is formed in the flow channel between the second section 46 and common connection element 24, and it is based upon outer flexible tube 14 and is connected with the fluid between environment, as in the figure 7 by a dotted line shown in arrow.
Set forth one of leak test method according to Fig. 8,9 and 10 below and implement variant.This enforcement variant is suitable for traditional breathing apparatus, as it is illustrated in instructions preamble.Such breathing apparatus 28 comprises for providing the air-breathing interface 30 of breathe air, for deriving the expiration interface 32 of the air of the exhalation of patient and being configured to the fluid sensor 33 of pressure measuring device, it is arranged in expiration interface 32 place.
Fluid sensor less than 33 is called as pressure measuring device 33.But also possible that, fluid sensor 33 is configured to other sensor or the combination for different sensors.Fluid sensor 33 especially also can be configured to flow sensor, such as volume flow sensor or mass flow sensor.Also at breathing apparatus 28 or that the different parts place of check system 1 arranges multiple identical type or dissimilar fluid sensor 33 can be revealed.
In shown form of implementation, fluid sensor 33 is configured to pressure transducer respectively, and it measures the pressure differential between pressure in the breathing hose of examine and environmental pressure or another reference pressure.Preferably in breathing hose, apply overvoltage, be drawn in breathing hose to avoid surrounding air.But also may in the region of the examine of breathing hose, apply negative pressure and measure corresponding pressure differential.
Also possible that, fluid sensor 33 is flow sensors, and it measures the flow by the breathe air of the breathing hose 10 of examine.Such as the supply of breathe air to be adjusted on certain pressure and to measure the corresponding flow of the supply of breathe air.
Alternatively, also can pump air from the breathing hose 10 of examine, such as, via the expiration interface 32 of breathing apparatus 28, and measure the corresponding flow of the air be pumped out.
Fig. 8 shows the layout of leak test system 1 in the leak test of inner flexible tube 12.Coaxial breathing hose 10 is connected with air-breathing interface 30 with the first connection element 16 be associated with inner flexible tube 12.
Second connection element 18 (it is associated with outer flexible tube 14) of the first hose end 20 is unlimited in shown enforcement variant, and formed thus and connect from the fluid of outer flexible tube 14 to environment, it especially allows to pressure equilibrium.But also possible that, the second connection element 18 is closed, such as, by the closure for preventing breathing hose 10 from polluting.Such closure such as just can be removed when the second connection element 18 is connected to breathing apparatus 28 by user, especially healthcare givers.
Install corresponding to Fig. 7 at the common connection element 24 place Connection Element 38 at the second hose end 22 place.Connection Element 38 is connected in expiration interface 32 place via the 3rd section 46.Therefore inner flexible tube 12 is connected with pressure measuring device 33 via the expiration interface 32 of percolation passage 40 and breathing apparatus and is connected via the fluid formed between common connection element 24 with the second section 44 by outer flexible tube 14 on the other hand and is connected with environment facies by Connection Element 38 1 aspect.Guarantee the pressure equilibrium with environment in outer flexible tube 14 in like fashion, the second connection element 18 regardless of the first hose end 20 opens wide or closes.
In order to leak test, breathing apparatus 28 provides certain breathe air overvoltage at air-breathing interface 30 place and measures the pressure or pressure curve that obtain at expiration interface.If should leakage position be there is in inner flexible tube 12, then breathe air to be flow in outer flexible tube 14 by leakage position and is connected via the fluid between Connection Element 38 and common connection element 24 therefrom and flows out in environment, measures the pressure drop in inner flexible tube 12 thus.
In this form of implementation, inner flexible tube 12 passes through at the second hose end 22 place to close airtightly at the valve at expiration interface 32 place of breathing apparatus.Be configured so that it is linked with the inner flexible tube 12 being connected in expiration interface 32 place when valve cuts out at the pressure measuring device 33 at expiration interface 32 place.
Corresponding valve is arranged on air-breathing interface 30 place and is closed after such as can being to set up overvoltage in inner flexible tube 12, also can close inner flexible tube airtightly at the first hose end 20 place thus.The pressure change in the inner flexible tube closed airtightly in both sides can be measured in like fashion.
If do not find leakage position in the leak test of inner flexible tube 12, perform the leak test of whole breathing hose in the second step.To this, as shown in FIG. 9, the second connection element 18 of the first hose end 20 be associated with outer flexible tube 14 is connected in expiration interface 32 place of breathing apparatus.At the second hose end 22 place, web member 38 is removed from common connection element 24.
Next, as shown in Figure 10, closed the common connection element 24 of the second hose end 22 airtightly by common closure elements 48, wherein, the fluid be formed between inner flexible tube 12 with outer flexible tube 14 by common connection element 24 is connected.
Next, again provide overvoltage at air-breathing interface 30 place of breathing apparatus 28, its via inner flexible tube 12, to be connected by the fluid of common connection element 24 between inner flexible tube 12 with outer flexible tube 14 and outer flexible tube 14 constructs until the expiration interface 32 of breathing apparatus 28 and pressure measuring device 33.Be similar to above-mentioned leak test, for the leakage position in outer flexible tube 14, breathe air will to be flow to by this leakage position in environment and causes the pressure drop in whole coaxial breathing hose 10, and it detects by pressure survey.
Therefore there is not leakage position if unmeasured to pressure drop, by being removed from common connection element 24 by common closure elements 48 and installing the breathing equipment being used for patient, can breathing hose be used with conforming with the regulations.
According to Figure 11 to 13, second form of implementation and method variant are described.
Figure 11 shows the detailed view of the common connection element 24 with inner flexible tube-closure elements 50, inner flexible tube-closure elements 50 is configured to common connection element 24 place being fixed on coaxial breathing hose 10, wherein, inner flexible tube-closure elements 50 is closed inner flexible tube 12 airtightly at the second hose end 22 place and between outer flexible tube with environment, is formed fluid and is connected.
In shown form of implementation, common connection element 24 is configured so that it has the open cross-section D of inner flexible tube 12
i, outer flexible tube 14 open cross-section D
awith the common open cross-section D of common point of attachment 52
g, wherein, common open cross-section D
gdiameter be greater than the open cross-section D of inner flexible tube 12
idiameter.In a straightforward manner inner flexible tube-closure elements 50 can be inserted by common point of attachment 52 in like fashion, with the open cross-section D of closed inner flexible tube 12
i.
In shown form of implementation, common connection element 24 comprises connector 54, installs inner flexible tube structural detail 56 at its place.At this, the open cross-section D of inner flexible tube structural detail 56
bpreferably corresponding to the common open cross-section D of common point of attachment 52
g.In like fashion, inner flexible tube structural detail 56 can be configured to roughly the same with the corresponding inhaling hose of traditional breathing tube system, and such as in breathing hose, the resistance to flow of breathe air does not change and therefore do not need the coupling of the controller of breathing apparatus thus.In addition, the compatibility with the breathing equipment 26 of existing patient can be realized in like fashion.
In shown form of implementation, inner flexible tube-closure elements 50 comprises conically tapered closed section and operator region (it has the diameter of reduction and constructs with extending in the axial direction), wherein, operator region stretches out and therefore can be installed in the opening part of inner flexible tube 12 in a straightforward manner and remove from this opening in the detent position of inner flexible tube-closure elements 50 from common connection element 24.
Alternatively it is possible that inner flexible tube-closure elements 50 is configured so that it has a section, that is, it abuts in the inner side place of common connection element 24 hermetically with this section.Therefore inner flexible tube-closure elements 50 is also closed outer flexible tube 14 at the second hose end 22 place and is therefore not only stoped to be connected at inner flexible tube 12 or outer flexible tube 14 with the fluid between environment but also to stop and connect via the fluid of connection element 24 common in the region of the second hose end 22 between inner flexible tube 12 and outer flexible tube 14.In this case, be formed in outer flexible tube 14 via outer flexible tube 14 at the connection element 18 at the first hose end 20 place to be connected with the fluid between environment.
Figure 12 shows the second form of implementation of leak test system 1, the inner flexible tube-closure elements 50 in its coaxial breathing hose 10 constructed with identical with the first form of implementation, figure above and the breathing apparatus 28 changed.
Breathing apparatus 28 is distinguished with the breathing apparatus of form of implementation above and is, air-breathing interface 30 place is provided with the pressure measuring device 33 for leak test.In like fashion, leak test method can be performed in a simplified manner.
In the first leak test step for checking the leakage between inner flexible tube 12 and outer flexible tube 14, breathing hose 10 is connected in air-breathing interface 30 place with two connection elements 16,18 of the first hose end 20 or at expiration interface 32 place.At the second hose end 22 place, inner flexible tube-closure elements 50 is arranged on common connection element 24 place, inner flexible tube 12 is closed airtightly and is formed in outer flexible tube 14 simultaneously and is connected with the fluid between environment thus, makes the pressure equilibrium between outer flexible tube 14 and environment become possibility thus.The form of implementation that this leak test is similar to above realizes, wherein, provide breathe air overvoltage at the breathing apparatus 28 at air-breathing interface 30 place and detect the possible pressure drop in leakage position place between inner flexible tube 12 and outer flexible tube 14 at the pressure measuring device 33 at air-breathing interface 30 place.
After the leak test of inner flexible tube 12 successfully terminates, by by taking off inner flexible tube-closure elements 50 at common connection element 24 place and installing common closure elements 48 similarly with Figure 10, realize the leak test of whole breathing hose 10 in fig. 13.This leak test realizes similarly with method illustrated in Fig. 10.
In principle also possible that, pressure measuring device 33 is configured to independent component or breathing apparatus 28 and has independent connection element for pressure measuring device 33, corresponding connection element 16,18,24 place that is that it can be coupled to coaxial breathing hose 10 or Connection Element 38.
Also the leak test of whole coaxial breathing hose 10 may be performed before the leak test of inner flexible tube.
In addition also possible that, in order to leak test breathing hose 10 be connected in expiration interface 32 place of breathing apparatus 28 and air is pumped from breathing hose 10, in inner flexible tube 12 or whole breathing hose 10, produce negative pressure thus and perform corresponding pressure survey or the flow measurement inspection for leakage position (air can be invaded from environment inner flexible tube 12 or whole breathing hose 10 by it).
Claims (8)
1. the leak test system (1) for patient respiratory respiratory system used, its with:
For providing the breathing apparatus (28) of breathe air, it has for the air-breathing interface (30) of supply of breathing air and the expiration interface (32) for deriving breathe air,
The coaxial breathing hose (10) of examine, its outer flexible tube (14) that there is inner flexible tube (12) and surround described inner flexible tube (12), wherein, described inner flexible tube (12) and described outer flexible tube (14) have respectively at the first hose end (20) place and are configured to be coupled to the air-breathing interface (30) of described breathing apparatus (28) or the connection element (16 at expiration interface (32) place respectively, 18) and at the second hose end (22) place there is the common connection element (24) at breathing equipment (26) place being configured to be coupled to patient,
Inner flexible tube-closure elements (50), it is configured to common connection element (24) place being installed in coaxial described breathing hose, wherein, described inner flexible tube-closure elements (50) closes described inner flexible tube (12) airtightly at described second hose end (22) place.
2. leak test system according to claim 1, wherein, described inner flexible tube-closure elements (50) is also closed described outer flexible tube (14) at described second hose end (22) place and is realized being connected with the fluid between environment at described outer flexible tube (14) by the connection element (18) of described outer flexible tube (14) at described first hose end (20) place.
3. a Connection Element (38), it is for having the inner flexible tube (12) of interior xsect and having the leak test of coaxial breathing hose (10) of outer flexible tube (14) of flow cross section of annular, described inner flexible tube and described outer flexible tube have common connection element (24) at hose end (22) place, it is configured to breathing equipment (26) place being coupled to patient, wherein, described Connection Element (38) is configured to tubular with at the air-breathing interface of described inner flexible tube (12) and breathing apparatus (28) or expiration interface (30, 32) or formed between fluid sensor (33) fluid connect, and
Described Connection Element comprises:
First section (42), it is configured to the interior cross-section abutting in described inner flexible tube (12) airtightly,
Second section (44), it is configured to extend through common described connection element (24) in the axial direction, and
3rd section (46), it is configured to be coupled to described air-breathing interface or expiration interface (30,32) or described fluid sensor (33) place.
4. Connection Element according to claim 3, wherein, second section (44) of tubular described Connection Element (38) is configured to define and is connected with the fluid between environment at described outer flexible tube (14) and has surface structure (47) on its outer surface, and it is configured to be formed in described outer flexible tube (14) together with common described connection element (24) and is connected with the fluid between environment.
5. Connection Element according to claim 4, wherein, described surface structure (47) is the groove stretched in the axial direction.
6. the Connection Element according to any one of claim 3 to 5, wherein, the subregion on the surface of described Connection Element can be configured to abut in common described connection element (24) place in the region of second section (44) of described Connection Element (38), wherein, other subregion and the common described connection element (24) on described surface construct at least one passage, and it is formed in described outer flexible tube (14) and is connected with the fluid between environment.
7. the assembly for the leak test of coaxial breathing hose (10), described breathing hose (10) has inner flexible tube (12) and surrounds the outer flexible tube (14) of described inner flexible tube (12), wherein, inner flexible tube (12) and outer flexible tube (14) have common connection element (24) at hose end (22) place
Wherein, described assembly comprises Connection Element (38) according to any one of claim 3 to 6 and closure elements (48), wherein, described closure elements (48) is configured to close common described connection element (24) airtightly, wherein, the fluid be formed between described inner flexible tube (12) with described outer flexible tube (14) by common described connection element (24) is connected.
8. assembly according to claim 7, wherein, described assembly comprises the second closure elements (50), it is configured to close described inner flexible tube (12) airtightly at the second hose end (22) place, wherein, described second closure elements (50) is formed in described outer flexible tube (14) and is connected with the fluid between environment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014000101.6 | 2014-01-10 | ||
| DE102014000101.6A DE102014000101A1 (en) | 2014-01-10 | 2014-01-10 | Method for leakage testing of a coaxial breathing tube, leakage test system and connecting element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479255U true CN204479255U (en) | 2015-07-15 |
Family
ID=53484650
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520014458.2U Active CN204479255U (en) | 2014-01-10 | 2015-01-09 | The leak test system of coaxial breathing hose leak test, Connection Element and assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204479255U (en) |
| DE (1) | DE102014000101A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114736A (en) * | 2015-09-18 | 2015-12-02 | 苏州益诺斯医疗科技有限公司 | Medical trachea interface and installing method thereof |
| CN113244494A (en) * | 2020-01-28 | 2021-08-13 | 德尔格制造股份两合公司 | Curved connection unit for connecting a patient to a medical device |
| CN113329780A (en) * | 2019-05-14 | 2021-08-31 | 德尔格制造股份两合公司 | Connection device for establishing a fluid connection between a medical device and a patient-side coupling unit |
| WO2024069315A1 (en) * | 2022-09-26 | 2024-04-04 | Covidien Lp | Hybrid single-limb medical ventilation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219046B (en) * | 2017-07-19 | 2024-02-09 | 上海德尔格医疗器械有限公司 | Breathing tube testing device and testing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO902033L (en) * | 1990-05-08 | 1991-11-11 | Medinnova As | TEST ADAPTER FOR THE ANCOSIS SYSTEM. |
| GB2368531A (en) * | 2000-10-31 | 2002-05-08 | Paul Fenton | Anaesthesia breathing apparatus |
| US8707952B2 (en) * | 2010-02-10 | 2014-04-29 | Covidien Lp | Leak determination in a breathing assistance system |
| WO2013096495A1 (en) * | 2011-12-19 | 2013-06-27 | ResQSystems, Inc. | Systems and methods for therapeutic intrathoracic pressure regulation |
-
2014
- 2014-01-10 DE DE102014000101.6A patent/DE102014000101A1/en active Pending
-
2015
- 2015-01-09 CN CN201520014458.2U patent/CN204479255U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114736A (en) * | 2015-09-18 | 2015-12-02 | 苏州益诺斯医疗科技有限公司 | Medical trachea interface and installing method thereof |
| CN113329780A (en) * | 2019-05-14 | 2021-08-31 | 德尔格制造股份两合公司 | Connection device for establishing a fluid connection between a medical device and a patient-side coupling unit |
| CN113329780B (en) * | 2019-05-14 | 2023-11-14 | 德尔格制造股份两合公司 | Connection device for establishing a fluid connection between a medical device and a patient-side coupling unit |
| CN113244494A (en) * | 2020-01-28 | 2021-08-13 | 德尔格制造股份两合公司 | Curved connection unit for connecting a patient to a medical device |
| CN113244494B (en) * | 2020-01-28 | 2023-09-08 | 德尔格制造股份两合公司 | Curved connection unit for connecting a patient to a medical device |
| WO2024069315A1 (en) * | 2022-09-26 | 2024-04-04 | Covidien Lp | Hybrid single-limb medical ventilation |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014000101A1 (en) | 2015-07-16 |
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Effective date of registration: 20160121 Address after: Lubeck Patentee after: DRAGER MEDICAL GMBH Address before: Lubeck Patentee before: Draeger Medical AG. & Co. KG |