CN102599900A - Fluid pressure measuring sac tube - Google Patents
Fluid pressure measuring sac tube Download PDFInfo
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- CN102599900A CN102599900A CN2012100887406A CN201210088740A CN102599900A CN 102599900 A CN102599900 A CN 102599900A CN 2012100887406 A CN2012100887406 A CN 2012100887406A CN 201210088740 A CN201210088740 A CN 201210088740A CN 102599900 A CN102599900 A CN 102599900A
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- pressure
- guiding pipe
- pressure guiding
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- pipe
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Abstract
The invention relates to a fluid pressure measuring sac tube, which comprises a pressure measuring ball sac, a pressure leading tube, a pressure sensor, a miniature convection sensor and a local heater. The pressure sensor, a gas injection connector and the miniature convection sensor are successively arranged at the initial end of the pressure leading tube from top to bottom, the pressure sensor and the miniature convection sensor are respectively fixed with the outer wall of the pressure leading tube, the pressure measuring ball sac is arranged at the tail end of the pressure leading tube and is integrally connected with the pressure leading tube, an alarming joint is arranged on the inner wall of the pressure measuring ball sac, and the local heater (7) is disposed in the middle of an external section of the pressure leading tube (2). The fluid pressure measuring sac tube adopts pressure measuring technology for temperature compensation detection by the aid of a tension ball sac catheter, can provide a dynamic temperature compensation feedback signal, has a ball sac bending prevention effect and a joint alarming output function, and prompts an operator to run safely. In addition, the fluid pressure measuring sac tube is used with a microcomputer control system, can be used for measuring pressure of fluid in cavity organs such as a stomach and the like in a severe environment, and can alarm when in fault conditions that the ball sac cannot be expanded or is broken.
Description
Technical field
The present invention 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 scientific research process, the device of transformation power when needing a kind of continuous probe live body hollow organ inner fluid sometimes.At present correlative measurement press-fits and is equipped with: like the pressure measurement of wireless capsule formula; Be main with swallowable capsule at present; But the processing method that the interior pasty state viscous mass of digestive tract is blocked after the capsular pressure transducer pressure measurement port remains further to be studied; Still lack in addition at external instruction capsule and move in certain internal organs the technology of making the fixed point pressure detecting at the appointed time, so do not reach fully as yet can the practical gaging stage for this pressure testing method.And for example, conventional inserts gastral pressure catheter technology from nasal cavity or oral cavity, is in air bag and pressure guiding pipe, to charge into quantitative gas, and when air bag received to compel, gasbag pressure outputed to external pressure transducer through pressure guiding pipe, thereby realized the fixed point pressure measurement.The air bag of the conventional manometry of this type, employing air bag two ends that have are run through by pressure guiding pipe and are fixed on the structure on the pressure guiding pipe, and what air bag was compeled to be exported 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 and is managed specified point and just inflate, and 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 observable therapeutic process of bladder shape non real-time, 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 bigger 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 receives temperature difference influence obvious; In addition, in case pressure measuring system generation balloon rupture, need are judged the air pressure signal that collects through algorithm, or the judgement of manual observation pressure gauge reading, lack direct warning measure.
Seeing that present air bag pressure tester measurement error is big, and warning measure imperfection, therefore, need a kind of new foley's tube pressure tester.
Summary of the invention
The present invention be to solve that the detected pressure value of existing pressure catheter device receives that temperature difference influence is big, fault alarm function shortcoming and bladder shape be to pressure influence complicated technology problem; 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.
Technical scheme of the present invention 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 is fixed with the pressure guiding pipe outer wall respectively flow sensor; The pressure guiding pipe terminal is provided with the pressure measurement sacculus; And pressure measurement sacculus and pressure guiding pipe connect as one, and 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 it is 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 processed by rubber type of material, and pressure measurement sacculus inwall porch is provided with two movable contacts of two conductive coatings as the 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 detection pressure guiding pipe, microprocessor is given local heater by the value of feedback output drive signal, to external section heating of pressure guiding pipe.
Beneficial effect of the present invention is: the present invention adopts the manometric technique of the band tension force foley's tube of temperature-compensating detection, and the feedback signal of dynamic temp compensation can be provided, and has 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, and the fluid pressure measurement problem in the hollow organ such as stomach for example, and can not launch and the sacculus fault alarm that breaks sacculus.
Description of drawings
Fig. 1 is the schematic side view before the present invention inflates;
Fig. 2 is the axial section sketch map after the inflated of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As shown in Figure 1, fluid pressure of the present invention 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.
Gas injection interface 5, pressure transducer 6; Miniature flow sensor 4 all is arranged on pressure guiding pipe 2 tops; Two pick offs are installed at pressure guiding pipe 2 external fixation; Pressure guiding pipe 2 terminals are thin film pressure measurement sacculus 1, and pressure measurement sacculus and pressure guiding pipe 2 are connected as a single entity through making, and warning contact 9 is two conductive coatings that are positioned at sacculus 1 inwall porch and warning contact lead-out wire overlap joint.
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, again in the pipe that caused by pressure guiding pipe 2 tops and terminal difference of energy measurement gas to stream mode, 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 pick offs all only contact from the gas of gas injection interface 5 injections, and separate with detected fluid.
Pressure measurement sacculus 1 and pressure guiding pipe 2 are processed by rubber type of material; Wherein, pressure measurement sacculus 1 is processed by the homogenizing elastic film rubber type of material of thickness≤0.25mm, and its inwall has two movable contacts of two conductive coatings as warning contact 9; Quantitatively be the approximate circle sphere after the inflation; Membrane tension makes pressure measurement sacculus 1 in Fluid Pressure Field, present rigidity and bending can not take place, and the diameter of inflation pressure measurement sacculus 1 is greater than pressure guiding pipe 2 external diameters more than three times, and pressure guiding pipe 2 can not have obvious distortion by pressure-bearing 70kPa.
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 diameter two ends of pressure guiding pipe 2 radial sections all the time, until pressure guiding pipe 2 and terminal pressure measurement sacculus 1 intersection, respectively with two conductive coatings overlap joints as two movable contacts of warning contact 9.
Before putting pipe shrivel pressure measurement sacculus 1, under the folding state of certain movable contact one side wherein, two movable contacts and the conductive coating of warning contact 9 can receive press contacts, 9 connections of warning contact at the pressure measurement sacculus 1 that shrivels.
As shown in Figure 2; After gas injection interface 5 malleations are injected quantitative gas; Membrane tension makes pressure measurement sacculus 1 in Fluid Pressure Field, present rigidity and bending can not take place; Pressure measurement sacculus 1 is expanded to the approximate circle sphere, between A conductive coating 10 and the B conductive coating 11 by the insulated with material of pressure measurement sacculus 1 isolate with capsule in gas barrier and warning contact 9 is broken off.
When this device uses,, make pressure measurement sacculus 1 thin film pressurized fill and heave from gas injection interface 5 filling quantitative gas; Approximate be ball, with whole measuring pressure ball capsule 1 surperficial perception fluid pressure, 1 of pressure measurement sacculus pressurized and slightly change its radius in the pressure measurement process; Make 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 makes pressure measurement sacculus 1 be rigidity, can pressurized generation bending and the shutoff gas circuit; Can be considered inflexible pressure guiding pipe and guaranteed that also the pressure measurement gas circuit is unobstructed, promptly this device has reduced the blocking probability of pressure measurement gas circuit.As if still conducting of warning contact 9, represent that then pressure measurement sacculus 1 does not launch, and need put pipe again after the gas injection.In normal the use; Warning contact 9 breaks off, if pressure measurement sacculus 1 breaks, then detected fluid will get into pressure measurement sacculus 1 inboard; Because pressure guiding pipe 2 all is millimeter level lengths 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 the atmospheric environment temperature, the conduction of heat of pressure measurement sacculus 1 thin film is far more than pressure guiding pipe 2 tube walls again, so make the rapid heat temperature raising of gas quilt in the pressure measurement sacculus 1.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 the 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, promptly adopts the miniature gaseous exchange that flow sensor 4 is detected in the pressure guiding pipe 2; Output feedback convection current signal is given 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 basically, 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 pick offs and the local heater 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: said 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, and 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: said miniature sensitivity end to flow sensor (4) connects pressure guiding pipe (2) wall; And it is 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: said pressure measurement sacculus (1) and pressure guiding pipe (2) are processed by rubber type of material; Pressure measurement sacculus (1) inwall porch is provided with two movable contacts of two conductive coatings as 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; Said pressure guiding pipe (2) pressure-bearing is 70kPa.
4. fluid pressure according to claim 1 is measured the capsule pipe; It is characterized in that: the lead-out wire of said two conductive coatings is two flexible thin wires, and 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, draw 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 said miniature microprocessor that feeds back signal to the interior gaseous exchange of flow sensor (4) output detection pressure guiding pipe (2); Microprocessor is given local heater (7) by the value of feedback output drive signal, to external section heating of pressure guiding pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100887406A CN102599900A (en) | 2012-03-30 | 2012-03-30 | Fluid pressure measuring sac tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100887406A CN102599900A (en) | 2012-03-30 | 2012-03-30 | Fluid pressure measuring sac tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102599900A true CN102599900A (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100887406A Pending CN102599900A (en) | 2012-03-30 | 2012-03-30 | Fluid pressure measuring sac tube |
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| CN (1) | CN102599900A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103006222A (en) * | 2012-12-28 | 2013-04-03 | 安福日昇电子有限公司 | Body cavity internal-condition monitor |
| CN106618803A (en) * | 2017-02-08 | 2017-05-10 | 上海纽脉太惟医疗科技有限公司 | Artificial heart valve prosthesis conveying device |
| CN107743375A (en) * | 2015-05-20 | 2018-02-27 | Thd股份公司 | A kind of equipment and its measuring method for pressure measxurement |
| CN114082013A (en) * | 2021-11-23 | 2022-02-25 | 无锡圣诺亚科技有限公司 | Visual drainage device |
Citations (7)
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| GB1436313A (en) * | 1972-09-13 | 1976-05-19 | Nat Res Dev | Method and apparatus for measuring pressure |
| WO1994012097A1 (en) * | 1992-11-23 | 1994-06-09 | Lundgren, Clas, E., G. | Combination esophageal catheter for the measurement of atrial pressure |
| EP0617913A1 (en) * | 1993-03-26 | 1994-10-05 | Baxter International Inc. | Intracranial pressure monitor and drainage catheter assembly |
| CN102089632A (en) * | 2008-07-08 | 2011-06-08 | 皇家飞利浦电子股份有限公司 | Sensor and control unit for flow control and a method for controlled delivery of fluid |
| CN201939355U (en) * | 2011-02-24 | 2011-08-24 | 王秀晶 | Gastrointestinal pressure-measuring device for internal medicine |
| CN201987606U (en) * | 2011-03-24 | 2011-09-28 | 王宝璘 | Pressure monitoring type three-cavity and two-bag tube |
| CN202654119U (en) * | 2012-03-30 | 2013-01-09 | 上海应用技术学院 | Fluid pressure measuring balloon pipe |
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2012
- 2012-03-30 CN CN2012100887406A patent/CN102599900A/en active Pending
Patent Citations (7)
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| WO1994012097A1 (en) * | 1992-11-23 | 1994-06-09 | Lundgren, Clas, E., G. | Combination esophageal catheter for the measurement of atrial pressure |
| EP0617913A1 (en) * | 1993-03-26 | 1994-10-05 | Baxter International Inc. | Intracranial pressure monitor and drainage catheter assembly |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103006222A (en) * | 2012-12-28 | 2013-04-03 | 安福日昇电子有限公司 | Body cavity internal-condition monitor |
| CN107743375A (en) * | 2015-05-20 | 2018-02-27 | Thd股份公司 | A kind of equipment and its measuring method for pressure measxurement |
| CN107743375B (en) * | 2015-05-20 | 2021-03-16 | Thd股份公司 | Equipment for pressure measurement and measurement method thereof |
| CN106618803A (en) * | 2017-02-08 | 2017-05-10 | 上海纽脉太惟医疗科技有限公司 | Artificial heart valve prosthesis conveying device |
| CN114082013A (en) * | 2021-11-23 | 2022-02-25 | 无锡圣诺亚科技有限公司 | Visual drainage device |
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Application publication date: 20120725 |