CN202654119U - Fluid pressure measuring balloon pipe - Google Patents
Fluid pressure measuring balloon pipe Download PDFInfo
- Publication number
- CN202654119U CN202654119U CN 201220126819 CN201220126819U CN202654119U CN 202654119 U CN202654119 U CN 202654119U CN 201220126819 CN201220126819 CN 201220126819 CN 201220126819 U CN201220126819 U CN 201220126819U CN 202654119 U CN202654119 U CN 202654119U
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- pressure
- guiding pipe
- pipe
- pressure guiding
- sacculus
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- Expired - Fee Related
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Abstract
The utility model relates to a fluid pressure measuring balloon pipe which comprises a pressure measuring balloon, a pressure guiding pipe, a pressure sensor, a micro convection sensor and a local heater, wherein the starting end of the pressure guiding pipe is sequentially provided with the pressure sensor, a gas injection port and the micro convection sensor from top to bottom, the pressure sensor and the micro convection sensor are respectively fixed with the outer wall of the pressure guiding pipe, the end of the pressure guiding pipe is provided with the pressure measuring balloon, the pressure measuring balloon is connected with the pressure guiding pipe into a whole, an alarm joint is arranged on the inner wall of the pressure measuring balloon, and the local heater is arranged on the middle section of the outer section of the pressure guiding pipe body. By adopting a pressure measuring technology of a tension balloon guide pipe for temperature compensation detection, the fluid pressure measuring balloon pipe can provide a feedback signal of dynamic temperature compensation, has a balloon bending-preventing effect and a joint alarm output function, and reminds an operator of carrying out safety operation. The fluid pressure measuring balloon pipe is matched with a microcomputer control system, can solve the problem of fluid pressure measurement in hollow organs such stomach under a severe environment, and can carry out failure warning when a balloon can not be unfolded and is broken.
Description
Technical field
This utility model relates to a kind of fluid pressure test set, particularly a kind of pressure tester of medical capsule pipe.
Background technology
In present medical treatment and process of scientific research, the device of pressure changeable when sometimes needing a kind of continuous probe live body hollow organ inner fluid.At present correlative measurement press-fits and is equipped with: such as the pressure measurement of wireless capsule formula, at present take swallowable capsule as main, but the interior pasty state viscous mass of digestive tract is blocked the pressure transducer pressure measurement port processing method afterwards of capsule and is remained further to be studied, still lack in addition at external instruction capsule and move at the appointed time in certain internal organs the technology of making the fixed point pressure detecting, thus this pressure testing method reach not yet fully can practical pressure measurement stage.And for example, conventional inserts gastral pressure catheter technology from nasal cavity or oral cavity, is to be filled with quantitative gas in air bag and pressure guiding pipe, and when air bag was forced to, gasbag pressure outputed to external pressure transducer by pressure guiding pipe, thereby realizes the fixed point pressure measurement.The air bag of the conventional manometry of this class, employing air bag two ends that have are run through by pressure guiding pipe and are fixed on structure on the pressure guiding pipe, and what air bag was forced to export in pressure field is the pressure of two area of space between the stiff end, rather than certain any pressure; The structure of the employing air bag single-termination pressure guiding pipe that also has is waited to put pipe and is just inflated to specified point, open folded airbag, but the scrotiform shape after opening is difficult in vitro detection.These two kinds of structures all can cause the pressure measurement difficulty of fixing a point, especially there is the tension force situation in air bag and film, functional relationship between bladder shape and the output pressure is complicated, in the non real-time observable therapeutic process of bladder shape, as actual internal organs fluid pressure, can cause the pressure measurement error with the pressure of pressure guiding pipe output; And pressure transducer is positioned at external because air bag is positioned at the live body internal organs, the internal milieu temperature had larger uncertainty near the individual variation of live body caused the air bag operating point, temperature sensor is difficult to insert usually in the narrow space, the temperature difference between air bag and the pressure transducer is difficult for real-Time Compensation, and the standardize solution gas output pressure that causes injecting air bag and pressure guiding pipe is subjected to temperature difference influence obvious; In addition, in case pressure measuring system generation balloon rupture, need are judged the air pressure signal that collects by algorithm, or the judgement of manual observation pressure gauge reading, lack direct warning measure.
In view of present air bag pressure tester measurement error is large, therefore and warning measure imperfection, needs a kind of new foley's tube pressure tester.
Summary of the invention
This utility model is that the detected pressure value that will solve existing pressure catheter device is subjected to that temperature difference influence is large, fault alarm function shortcoming and bladder shape be to the technical problem of pressure influence complexity, and provide a kind of fluid pressure to measure the capsule pipe, this measurement capsule pipe utilizes the sacculus of membrane tension to combine with pressure guiding pipe, and has warning function.
The technical solution of the utility model is: a kind of fluid pressure is measured the capsule pipe, comprise pressure measurement sacculus, pressure guiding pipe, pressure transducer, local heater and miniature to flow sensor, be characterized in: pressure guiding pipe top sets gradually pressure transducer from top to bottom, gas injection interface and miniature to flow sensor, and pressure transducer and miniature flow sensor is fixed with the pressure guiding pipe outer wall respectively, the pressure guiding pipe terminal is provided with the pressure measurement sacculus, and pressure measurement sacculus and pressure guiding pipe connect as one, pressure measurement sacculus inwall is provided with the warning contact, and the stage casing that pressure guiding pipe is external section is provided with local heater.
Miniature sensitivity end to flow sensor connects the impulse tube wall, and concordant with the pressure guiding pipe inwall, miniature to flow sensor and gas injection interface in the pressure guiding pipe setting of axially staggering, and pressure transducer all contacts the gas that injects from the gas injection interface with miniature to flow sensor, and separates with detected fluid.
Pressure measurement sacculus and pressure guiding pipe are made by rubber type of material, and pressure measurement sacculus inwall porch is provided with two conductive coatings as two movable contacts of warning contact, and the pressure measurement sacculus quantitatively is spheroidal after the inflation, and its diameter is greater than the pressure guiding pipe external diameter more than three times; The pressure guiding pipe pressure-bearing is 70kPa.
The lead-out wire of two conductive coatings is two flexible thin wires, two flexible thin wires begin from pressure guiding pipe top, in the impulse tube wall, lay, and lay respectively at diameter two ends of pressure guiding pipe radial section, until pressure guiding pipe terminal and pressure measurement sacculus intersection, draw the pressure guiding pipe inwall, respectively with two conductive coating overlap joints.
During pressure measurement, the miniature microprocessor that feeds back signal to the gaseous exchange in the flow sensor output detections pressure guiding pipe, microprocessor are pressed the value of feedback output drive signal to local heater, to external section heating of pressure guiding pipe.
The beneficial effects of the utility model are: the present invention adopts the manometric technique of the belt tension foley's tube of temperature-compensating detection, and the feedback signal of dynamic temp compensation can be provided, and has the anti-bending effect of sacculus and contact warning output, prompting operation person's safe operation.The present invention cooperates with Control System of Microcomputer, can solve under the adverse circumstances, such as the fluid pressure measurement problem in the hollow organs such as stomach, and can not launch to report to the police with the sacculus cracking to sacculus.
Description of drawings
Fig. 1 is the schematic side view before this utility model inflation;
Fig. 2 is the axial section sketch map after this utility model inflated.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, fluid pressure of the present utility model is measured the capsule pipe, comprises sacculus 1, pressure guiding pipe 2, gas injection interface 5, pressure transducer 6, local heater 7 and miniature to flow sensor 4 etc.
Because usually pressure guiding pipe 2 is flexible elongate tube of diameter number millimeter, so miniature sensitivity end to flow sensor 4 connects pressure guiding pipe 2 walls, need concordant with pressure guiding pipe 2 inwalls, both reduced the gas circuit resistance in pressure measurement stage, can measure again the Convection states of gas in the pipe that is caused by pressure guiding pipe 2 tops and terminal difference, export as the temperature-compensating feedback signal.Be to guarantee the pressure guiding pipe mechanical strength, miniature to flow sensor 4 and gas injection interface 5 in pressure guiding pipe 2 settings of axially staggering, and two sensors all only contact from the gas of gas injection interface 5 injections, and separate with detected fluid.
The A lead-out wire 3 that connects warning contact 9 lays respectively at 2 external sections of pressure guiding pipes with B lead-out wire 8, these two flexible thin wires begin from pressure guiding pipe 2 tops, in pressure guiding pipe 2 walls, bury underground and lay, and lay respectively at all the time diameter two ends of pressure guiding pipe 2 radial sections, until pressure guiding pipe 2 and terminal pressure measurement sacculus 1 intersection, respectively with two conductive coatings overlap joints of two movable contacts of conduct warning contact 9.
Before putting pipe pressure measurement sacculus 1 is shriveled, under the pressure measurement sacculus 1 that the shrivels state folding to certain movable contact one side wherein, two movable contacts and the conductive coating of warning contact 9 can be subjected to press contacts, 9 connections of warning contact.
As shown in Figure 2, after gas injection interface 5 malleations are injected quantitative gas, membrane tension so that pressure measurement sacculus 1 in Fluid Pressure Field, present rigidity and bending can not occur, pressure measurement sacculus 1 is expanded to the approximate circle sphere, by gas barrier in the isolation of the insulated with material of pressure measurement sacculus 1 and the capsule warning contact 9 is disconnected between A conductive coating 10 and the B conductive coating 11.
When this device uses, from gas injection interface 5 filling quantitative gas, heave so that pressure measurement sacculus 1 thin film pressurized is full, the approximate ball that is, with whole pressure measurement sacculus 1 surperficial perception fluid pressure, 1 of pressure measurement sacculus pressurized and slightly change its radius in the pressure measurement process, so that the approximation to function relation is constant between output pressure and pressure measurement sacculus 1 shape, reduced the error that pressure measurement sacculus 1 alteration of form causes, and the membrane tension effect is so that pressure measurement sacculus 1 is rigidity, can pressurized generation bending and the shutoff gas circuit, the pressure guiding pipe that can be considered rigidity has guaranteed that also the pressure measurement gas circuit is unobstructed, namely this device has reduced the blocking probability of pressure measurement gas circuit.If still conducting of warning contact 9 after the gas injection represents that then pressure measurement sacculus 1 does not launch, and need put pipe again.In normal the use, warning contact 9 disconnects, if pressure measurement sacculus 1 breaks, then detected fluid will enter pressure measurement sacculus 1 inboard, because pressure guiding pipe 2 all is grade length with the diameter of pressure measurement sacculus 1, so a little liquid measure can be served as conducting medium between warning contact 9, be communicated with the warning contact, send alarm signal.
During normal pressure measurement, this device C-C line lower end is inserted in the live body internal organs, because the internal temperature of live body internal organs is usually apparently higher than atmospheric temperature, the conduction of heat of pressure measurement sacculus 1 thin film is far more than again pressure guiding pipe 2 tube walls, so make pressure measurement sacculus 1 interior gas by rapid heat temperature raising.In temperature gradient field, along with gas away from terminal sacculus thermal source, gas temperature gradually falls, in view of the top of pressure guiding pipe 2 in the common pressure measurement process is higher than terminal, the temperature difference will cause the continuous convection current of gas, the gas pressure that also causes injecting fluctuates, and pressure measurement sacculus 1 volume also changes under the air pressure inside effect, thereby produces pressure measurement errors.
For avoiding above-mentioned error, the pressure measurement process need cooperate signal feedback, namely adopt the miniature gaseous exchange that flow sensor 4 is detected in the pressure guiding pipe 2, output feedback convection current signal is to microprocessor, drive local heater 7 by microprocessor by value of feedback, to external section heating of pressure guiding pipe 2, when the gas temperature in external section of pressure guiding pipe 2 equates with pressure measurement sacculus 1 gas temperature, convection current will disappear substantially, and miniature 4 outputs are approximately zero to flow sensor.
Pressure measurement finishes, and opens gas injection interface 5 and can take out pressure measurement sacculus 1 and pressure guiding pipe 2.Except two sensor local heaters 7, the remainder of this device all belongs to disposable product.
Claims (5)
1. a fluid pressure is measured the capsule pipe, comprise pressure measurement sacculus (1), pressure guiding pipe (2), pressure transducer (6), local heater (7) and miniature to flow sensor (4), it is characterized in that: described pressure guiding pipe (2) top sets gradually pressure transducer (6) from top to bottom, gas injection interface (5) and miniature to flow sensor (4), and pressure transducer (6) is fixedly connected with pressure guiding pipe (2) outer wall respectively flow sensor (4) with miniature, pressure guiding pipe (2) terminal is provided with pressure measurement sacculus (1), and pressure measurement sacculus (1) connects as one with pressure guiding pipe (2), pressure measurement sacculus (1) inwall is provided with warning contact (9), and the stage casing that pressure guiding pipe (2) is external section is provided with local heater (7).
2. fluid pressure according to claim 1 is measured the capsule pipe, it is characterized in that: described miniature sensitivity end to flow sensor (4) connects pressure guiding pipe (2) wall, and concordant with pressure guiding pipe (2) inwall, miniature to flow sensor (4) and gas injection interface (5) in pressure guiding pipe (2) setting of axially staggering, and pressure transducer (6) all contacts the gas that injects from gas injection interface (5) with miniature to flow sensor (4), and separates with detected fluid.
3. fluid pressure according to claim 1 is measured the capsule pipe, it is characterized in that: described pressure measurement sacculus (1) and pressure guiding pipe (2) are made by rubber type of material, pressure measurement sacculus (1) inwall porch is provided with two conductive coatings as two movable contacts of warning contact (9), pressure measurement sacculus (1) quantitatively is spheroidal after the inflation, and its diameter is greater than pressure guiding pipe (2) external diameter more than three times; Described pressure guiding pipe (2) pressure-bearing is 70kPa.
4. fluid pressure according to claim 3 is measured the capsule pipe, it is characterized in that: the lead-out wire of described two conductive coatings is two flexible thin wires, two flexible thin wires begin from pressure guiding pipe (2) top, in pressure guiding pipe (2) wall, lay, and lay respectively at diameter two ends of pressure guiding pipe (2) radial section, until pressure guiding pipe (2) terminal and pressure measurement sacculus (1) intersection are drawn pressure guiding pipe (2) inwall, respectively with two conductive coating overlap joints.
5. fluid pressure according to claim 1 is measured the capsule pipe, it is characterized in that: during pressure measurement, the described miniature microprocessor that feeds back signal to the interior gaseous exchange of flow sensor (4) output detections pressure guiding pipe (2), microprocessor is pressed the value of feedback output drive signal to local heater (7), to external section heating of pressure guiding pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220126819 CN202654119U (en) | 2012-03-30 | 2012-03-30 | Fluid pressure measuring balloon pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220126819 CN202654119U (en) | 2012-03-30 | 2012-03-30 | Fluid pressure measuring balloon pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202654119U true CN202654119U (en) | 2013-01-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220126819 Expired - Fee Related CN202654119U (en) | 2012-03-30 | 2012-03-30 | Fluid pressure measuring balloon pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202654119U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102599900A (en) * | 2012-03-30 | 2012-07-25 | 上海应用技术学院 | Fluid pressure measuring sac tube |
| CN104155219A (en) * | 2014-08-20 | 2014-11-19 | 东南大学 | Wireless measuring device and method for measuring dynamic parameters of non-spherical particles in three-dimensional dense gas-solid system |
-
2012
- 2012-03-30 CN CN 201220126819 patent/CN202654119U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102599900A (en) * | 2012-03-30 | 2012-07-25 | 上海应用技术学院 | Fluid pressure measuring sac tube |
| CN104155219A (en) * | 2014-08-20 | 2014-11-19 | 东南大学 | Wireless measuring device and method for measuring dynamic parameters of non-spherical particles in three-dimensional dense gas-solid system |
| CN104155219B (en) * | 2014-08-20 | 2016-11-09 | 东南大学 | The wireless measurement device of a kind of three-dimensional dense gas-solid system aspherical particle kinetic parameter and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20130330 |