CN208447592U - The structure that is covered with dust of lung function instrument - Google Patents
The structure that is covered with dust of lung function instrument Download PDFInfo
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- CN208447592U CN208447592U CN201720471383.XU CN201720471383U CN208447592U CN 208447592 U CN208447592 U CN 208447592U CN 201720471383 U CN201720471383 U CN 201720471383U CN 208447592 U CN208447592 U CN 208447592U
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Abstract
The utility model discloses a kind of structures that is covered with dust of lung function instrument, including shell, the upper end of shell is equipped with throttle pipe, the inner axial tube that throttles is equipped with the air passage of the big at both ends and small in middle of perforation, the pressure pipe for being connected to and radially extending with air passage at least provided with two on throttle pipe outer peripheral surface, the shell includes end cap, end cap is equipped with the body that can be socketed in pressure pipe peripheral side, set is equipped with through hole in vivo, the stifled film of elasticity is equipped in through hole, the stifled film of elasticity is equipped with the crack that pressure pipe can extend through.The utility model has the beneficial effects that blocking up film as the structure that is covered with dust due to being provided with the elasticity with cross crack in the through hole of end cap, so that lung function instrument main body can be with self-closed lung function instrument main body and extraneous interface channel after being detached from throttle pipe, prevent in the unexpected entrance lung function instrument main body of extraneous dust and moisture, so as to ensure the due precision of lung function instrument and service life.
Description
Technical field
The utility model relates to the field of medical instrument technology more particularly to a kind of structures that is covered with dust for lung function instrument.
Background technique
Pulmonary function test is to measure lung functions by lung function instrument, achievees the purpose that detect respiratory system exception.For
Early detection lung, respiratory disease；The reason of identifying expiratory dyspnea, judges the position of airway obstruction；Assess the disease of pulmonary disease
Feelings severity；A possibility that assessing surgical operation tolerance and development of postoperative complications；Health examination, labor intensity and tolerance
The assessment of power；Monitoring of urgent patient etc. has important directive significance.Numerous large sizes are studies have shown that there is respiratory system disease
Shape and high risk factor person pulmonary function test also can effectively reduce another problem --- the underdiagnosis of current chronic obstructive pulmonary disease.It can be said that
The detection of lung function not only facilitates the early diagnosis, state of an illness follow-up and curative effect evaluation of respiratory disease, more can be from basic
The upper Disease Spectrum for reducing patient individual and entire society.
Currently used lung function instrument has the portable lung function instrument of bellows type, the portable lung function instrument of turbine type, ultrasonic flow velocity to pass
The portable lung function instrument of sense type, differential portable lung function instrument, the testing principle of the portable lung function instrument of bellows type are that blower is past
Blowing in bellows expands air bag in bellows to push marker pen.Appearance is light, but measurable parameter is few.Turbine type is portable
Lung function instrument: principle be according to rotatable parts (turbine) velocity of rotation and the directly proportional characteristic of fluid velocity and design, gas
By when cause turbine rotation, by photoelectric effect by turbine rotation signal be converted into electric signal output, be current product it is general
All over the technical principle used.The disadvantage is that air-flow stop by when impeller can still there is inertia rotation to generate error, rotator inertia with
The factors such as bearing frictional torque also will affect sensor accuracy, and pollution turbine is easy when use, cause cross contamination.Ultrasound
The portable lung function instrument of flow-velocity sensing type: principle is the time difference that is transmitted on favorable current and inverse air-flow according to sound wave with gas
The relationship of flow velocity.Passing time difference depends on air velocity, and flow velocity is faster；Time difference is bigger, and flow velocity is calculated according to the time difference
Out.But consistency range is still larger, certain index poor repeatabilities, product cost is high.Differential portable lung function instrument: at present
This kind of product generallys use Fei Shi (Fleisch) and follow-on Lilly type differential pressure flowmeter.It has on flow sensor
One sieve-like filter, air-flow are declined by the resistance flow velocity netted when the net, as a result slightly decrease the pressure of the mesh other end,
Mesh both ends form pressure drop difference, and the pressure difference signal generated by gas flow rate is converted into electric signal by pressure difference sensor, locate
With number or graphic form output after reason.The shortcomings that technology be the water vapour of exhalation be easy on sieve-like filter condensation deposition and
Block mesh, filter cleaning-sterilizing is more difficult, thus influences measuring accuracy, and be easy to cause cross contamination；In addition, in height
Bigger error when flow measurement, the result measured cannot be converted mutually with reference instrument, need to calibrate after clean and maintenance etc..
Described above of the existing technology to overcome the problems, such as, our company specially develops a kind of to be set with venturi principle
The flow sensor (i.e. throttle pipe) of meter, and the flow sensor is applied in lung function instrument, so that the lung function instrument has
The pressure drop of higher detection sensitivity, detection is accurate, reusable, and without calibration, structure is simple, use cost is low
It is honest and clean.For health, flow sensor needs to sterilize, naturally it is also possible to it is disposable, lung function instrument when not used, flow sensing
Device and lung function instrument main body are typically in discrete state, are also beneficial to storage keeping in this way.But due to lung function instrument main body and stream
Its interface channel is connected with the external world after quantity sensor is detached from, and extraneous dust, moisture inevitably enter lung function instrument
Body interior, and there are many electronic components for influencing lung function instrument precision and service life for the setting of lung function instrument body interior
And electronic module, adverse consequences will be generated so for a long time by using.
Summary of the invention
To overcome technical problem described above, the utility model technical issues that need to address are to provide a kind of be detached from
It can be with the structure that is covered with dust of self-closed lung function instrument main body and the lung function instrument of extraneous interface channel after throttle pipe.
The technical solution adopted in the utility model is: a kind of structure that is covered with dust of lung function instrument, including shell, the upper end of shell
Equipped with throttle pipe, the inner axial tube that throttles is equipped with the air passage of the big at both ends and small in middle of perforation, on throttle pipe outer peripheral surface at least provided with
Two pressure pipes for being connected to and radially extending with air passage, the shell include end cap, and end cap, which is equipped with, can be socketed in pressure
The body of pipe peripheral side, set are equipped with through hole in vivo, are equipped with the stifled film of elasticity in through hole, and the stifled film of elasticity is equipped with pressure pipe can be with
The crack extended through.In order to avoid the stifled film of elasticity is racked by pressure pipe, intracorporal perforation bore dia and pressure pipe diameter difference are covered
Greater than the double thickness of the stifled film of elasticity；Since there is crack on the stifled film of elasticity, so that pressure pipe can when connecting lung function instrument main body
To squeeze the stifled film of elasticity and enter lung function instrument body interior, at the end of lung function instrument use, throttle pipe, the stifled film of elasticity are removed
It is restored under elastic reaction, blocks through hole again, lung function instrument body interior is made to be isolated from the outside world, can thus prevented outer
Dust, the moisture on boundary enter the inside of lung function instrument main body.
Preferably, the crack of the stifled film of elasticity is in cross.Crack is cut in crossing at right angle on the stifled film of elasticity, makes institute
Crack is cut in cross shape, can be conducive to improve inside force-bearing situation when the stifled film of elasticity is squeezed by pressure pipe in this way, with
Just the stifled film of elasticity can preferably restore after taking out throttle pipe.
Preferably, the body includes block set, cap bag, the stifled film of elasticity is located between block set and cap bag.Elasticity is stifled
Film is vulnerable part, and the stifled film of elasticity is arranged between block set, cap bag, can be conducive to the replacement of the stifled film of elasticity in this way.
Preferably, the outer rim of the stifled film of elasticity is equipped with ring support ring.Since the stifled film of elasticity has certain softness
Property, bracing ring is set in the outer rim of the stifled film of elasticity, is conducive to the reset and replacement of the stifled film of elasticity in this way.
Preferably, being equipped with sealing ring between the pressure pipe and body.Lung function instrument be according to two on throttle pipe not
The various functional parameters of lung function are calculated, analyzed, determining with the pressure difference between the pressure pipe of position.Pressure pipe, body it
Between sealing ring is set so that lung function instrument detection various functional parameters it is authentic and valid.
Preferably, the peripheral side of the pressure pipe is equipped with annular groove, the sealing ring is located in annular groove.In this way
The unexpected displacement of sealing ring can be prevented, while sealing ring unexpected the case where falling into lung function instrument body interior can also be prevented
Occur.
Preferably, the end cap is equipped with swelling column in the two sides of block set, the two sides of the cap bag are equipped with tight with swelling column
The distensible ring matched.It assembles in this way or dismounting cap bag is convenient, fast.
The utility model has the beneficial effects that blocking up film due to being provided with the elasticity with cross crack in the through hole of end cap
As the structure that is covered with dust, so that lung function instrument main body can be with self-closed lung function instrument main body and extraneous company after being detached from throttle pipe
Road is connected, is prevented in the unexpected entrance lung function instrument main body of extraneous dust and moisture, so as to ensure that lung function instrument is answered
Some precision and service life.
Detailed description of the invention
Fig. 1 is a kind of structural upright schematic diagram of lung function instrument；
Fig. 2 is a kind of perspective view of the explosion of end cap and throttle pipe in lung function instrument；
Fig. 3 is the schematic cross-sectional view that end cap and throttle pipe fit together in lung function instrument；
Fig. 4 is the enlarged diagram in the portion R in Fig. 3；
Fig. 5 is the stereoscopic schematic diagram of end cap in lung function instrument；
Fig. 6 is the stereoscopic schematic diagram of cap bag in lung function instrument；
Fig. 7 is the stereoscopic schematic diagram of the stifled film of elasticity in lung function instrument.
In figure: throttle pipe 1, shell 2, end cap 3, pressure pipe 4, sealing ring 5, bracing ring 6, cap bag 7, annular groove 8, block set
9, swelling column 10, distensible ring 11, elasticity stifled film 12, crack 13.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, the technical solution of the utility model work is further specifically retouched
It states:
Embodiment: a kind of structure that is covered with dust of lung function instrument is shown in diagram, including shell 2, and the upper end of shell 2 is equipped with throttle pipe
1, the air passage of the big at both ends and small in middle of perforation is axially arranged in throttle pipe 1, set on 1 outer peripheral surface of throttle pipe there are three and air passage
The pressure pipe 4 for being connected to and radially extending, air passage corresponds to diameter difference at the position of different pressure pipes 4, wherein intermediate pressure
Pipe 4 is located at air passage diameter minimum；It is connected between shell 2 and throttle pipe 1 by clamping structure and (is had in another patent
Description is omitted herein)；The shell 2 includes end cap 3, and end cap 3 is equipped with the body that can be socketed in 4 peripheral side of pressure pipe, set
It is equipped with through hole in vivo, the stifled film 12 of elasticity is equipped in through hole, crossing at right angle is cut with two cracks 13, institute on the stifled film 12 of elasticity
Two cracks 13 cut are in cross shape, and the outer rim of the stifled film 12 of elasticity is equipped with ring support ring 6, and pressure pipe 4 can be from cross
It is passed through in the crack 13 of shape.The body includes block set 9, cap bag 7, and the ring support ring 6 is located between block set 9 and cap bag 7,
The peripheral side of the pressure pipe 4 is equipped with annular groove 8, is socketed with sealing ring 5 in annular groove 8, the end cap 3 is in block set 9
Two sides are respectively equipped with swelling column 10, and the two sides of the cap bag 7 are respectively equipped with the distensible ring 11 with 10 close-fitting of swelling column.
Claims (7)
1. a kind of structure that is covered with dust of lung function instrument, including shell, it is characterised in that: the upper end of shell is equipped with throttle pipe, throttle pipe
Inside it is axially arranged with the air passage of the big at both ends and small in middle of perforation, is connected to simultaneously at least provided with two with air passage on throttle pipe outer peripheral surface
The pressure pipe radially extended, the shell include end cap, and end cap is equipped with the body that can be socketed in pressure pipe peripheral side, body
It is interior to be equipped with through hole, the stifled film of elasticity is equipped in through hole, the stifled film of elasticity is equipped with the crack that pressure pipe can extend through.
2. the structure that is covered with dust of lung function instrument according to claim 1, it is characterised in that: the crack of the stifled film of elasticity is in ten
Font.
3. the structure that is covered with dust of lung function instrument according to claim 2, it is characterised in that: the body includes block set, cap bag,
The stifled film of elasticity is located between block set and cap bag.
4. the structure that is covered with dust of lung function instrument according to claim 3, it is characterised in that: the outer rim of the stifled film of elasticity is equipped with
Ring support ring.
5. the structure that is covered with dust of lung function instrument according to any one of claims 1 to 4, it is characterised in that: the pressure pipe and set
Sealing ring is equipped between body.
6. the structure that is covered with dust of lung function instrument according to claim 5, it is characterised in that: the peripheral side of the pressure pipe is equipped with
Annular groove, the sealing ring are located in annular groove.
7. the structure that is covered with dust of lung function instrument according to claim 3 or 4, it is characterised in that: the end cap in block set two
Side is equipped with swelling column, and the two sides of the cap bag are equipped with the distensible ring with swelling column close-fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471383.XU CN208447592U (en) | 2017-05-01 | 2017-05-01 | The structure that is covered with dust of lung function instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471383.XU CN208447592U (en) | 2017-05-01 | 2017-05-01 | The structure that is covered with dust of lung function instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208447592U true CN208447592U (en) | 2019-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720471383.XU Active CN208447592U (en) | 2017-05-01 | 2017-05-01 | The structure that is covered with dust of lung function instrument |
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| Country | Link |
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| CN (1) | CN208447592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112914551A (en) * | 2021-01-20 | 2021-06-08 | 南通大学附属医院 | Multifunctional measuring device for respiratory system |
-
2017
- 2017-05-01 CN CN201720471383.XU patent/CN208447592U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112914551A (en) * | 2021-01-20 | 2021-06-08 | 南通大学附属医院 | Multifunctional measuring device for respiratory system |
| CN112914551B (en) * | 2021-01-20 | 2023-07-04 | 南通大学附属医院 | Multifunctional measuring device for respiratory system |
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