CN102908133A - Esophagus vein blood pressure measuring instrument - Google Patents
Esophagus vein blood pressure measuring instrument Download PDFInfo
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- CN102908133A CN102908133A CN2012104504658A CN201210450465A CN102908133A CN 102908133 A CN102908133 A CN 102908133A CN 2012104504658 A CN2012104504658 A CN 2012104504658A CN 201210450465 A CN201210450465 A CN 201210450465A CN 102908133 A CN102908133 A CN 102908133A
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Abstract
The invention discloses an esophagus vein blood pressure measuring instrument which comprises a vein blood pressure measuring probe, a demodulator and an optical fiber tube for electrically connecting the vein blood pressure measuring probe with the demodulator; the optical fiber tube comprises an elastic spiral sleeve and a single mode fiber conducting wire accommodated in the elastic spiral sleeve; the end part of the vein blood pressure measuring probe and that of the elastic spiral sleeve are packaged into a whole through a package; the package is a flagelliform sealed cylinder; and one end of the optical fiber conducting wire is in fusion splice with the vein blood pressure measuring probe, and the other end is inserted in the demodulator. The esophagus vein blood pressure measuring instrument has the advantages that the instrument can be operated by being implanted in the esophagus of a human body through the biopsy hole of an endoscope, so that the instrument can serve as a medical instrument matched with a medical endoscope and be used for detecting a lesion location in the state of esophageal varices and measuring vein blood pressure.
Description
Technical field
The present invention relates to the fluid pressure detection field, relate in particular to a kind of esophageal veins survey meter of blood pressure.
Background technology
The modern medicine clinical research proves, rupture of esophageal varices is hemorrhage to be one of the most dangerous complication of cirrhotic portal hypertensive patients.Adopt certain venous pressure sniffer and method to measure esophageal variceal vein pressure, namely the venous pressure value is the effective and important means that monitors, predicts that rupture of esophageal varices is hemorrhage.In recent years, the measurement of esophageal variceal vein pressure diagnosis comes into one's own day by day, especially detects the esophageal varicosis state by medical endoscope, and the technology of measuring simultaneously cirso-pressure is applied clinical.
Now esophageal variceal vein pressure measurement technology disclosed, that implement by medical endoscope (hereinafter referred to as endoscope) roughly is divided into two kinds: i.e. intravenous pressure measurement and vein measuring pressure from outside.The intravenous pressure measurement is by the fine needle aspiration cirso-, directly measures the vein blood vessel internal pressure.Because easily causing in clinical practice, infects and massive hemorrhage puncture pressure measuring, so most countries is abandoned.The vein measuring pressure from outside then is non-invasive pressure measurement, uses relatively method principle realization pressure measurement, and present application clinically is mainly based on following two kinds of application modes.
A kind of is the adherent manometric technique of esophageal variceal vein of Switzerland Mosimann invention, its principle is: because that the pressure that outwards presents of varicose vein wall equals vein is intrinsic pressure, adopt a double channel catheter to link to each other with pressure probe, probe is fixed on endoscope distal end, and conduit links to each other with micro air pump with electronic pressure gauge by the biopsy hole and forms gas return path.The loculus that rubber membrane of design covers in the probe, micro air pump is constantly sent into the probe loculus with air from input pipe.Then enter outlet tube, enter input pipe again and form gas return path, pressure is not zero when probe contacts any material.To pop one's head in when contacting with cirso-at Microendoscopic, the deformation of rubber membrane pressurized causes airflow obstruction, and pressure raises until when equaling the pressure of film, gas return path recovers in the gas backstreaming, this moment the electronic pressure gauge record value to equal esophageal variceal vein intrinsic pressure.
Another kind of pressure testing method is by Switzerland Gertsch invention, and ultimate principle is identical with the cuff pressure measurement.Its method is to be that the air bag of 3.5cm is installed in endoscope distal end with a diameter, again a conduit is linked to each other with air bag by the biopsy hole, the other end of conduit links to each other with a syringe and electronic pressure gauge by tee T, during inspection endoscope is inserted distal esophagus, with gently gas injection of syringe, air bag is full gradually, by the visible esophageal variceal vein of transparent airbag wall.When air bag contacts with blood vessel wall, continue the gas injection pressurization, until observe the trend disappearance of subsiding that air bag contacts with blood vessel wall, it is intrinsic pressure that the electronic pressure gauge record value is esophageal variceal vein.
Above-mentioned technology has the following disadvantages when clinical practice:
1) need the multi-person synergy operation, layout is numerous and diverse.The airflow duct that connects by the endoscopic biopsy hole is installed in advance, and is externally set up the devices such as pneumatic supply and manometer.
2) measurement data is difficult for intuitively differentiating and reading.Because the differentiation of measurement data must be carried out synchronously with operational observations, and measuring operation and record data are in dynamically all the time, are not easy to accurately identify and read.
3) function of endoscope is limited to.During second way pressure measurement, owing to must settle air bag at endoscope distal end in advance, endoscopic observation definition and scope are greatly affected, and have also restricted other detecting function in biopsy hole.
Summary of the invention
In view of this, be necessary to provide a kind of esophageal veins survey meter of blood pressure, in clinical practice, not only make things convenient for the patient to implant, shorten Measuring Time, reduce patient's wound bleeding risk, and make things convenient for clinical manipulation to use, reduce doctor's operation easier.
The present invention realizes like this, a kind of esophageal veins survey meter of blood pressure, it comprises venous pressure measuring probe, demodulator and the optical fiber tube that is electrically connected this venous pressure measuring probe and this demodulator, this optical fiber tube comprises the elastic helix sleeve pipe and is housed in the interior single-mode fiber wire of this elastic helix sleeve pipe, the end of this venous pressure measuring probe and this elastic helix sleeve pipe is packaged as a whole by packaging body, this packaging body is whiplike O-ring cylinder, one end of this optic fibre wire and this venous pressure measuring probe fuse, and the other end and this demodulator are pegged graft.
Further improvement as such scheme, this esophageal veins survey meter of blood pressure also comprises positioning sleeve, this positioning sleeve comprises the location division that is set on this optical fiber tube, turns to handle and locking nut, this location division turns to the inwall of handle to stretch in this locking nut via this, this turns to handle to be used to adjust the radial deflection angle of this optical fiber tube, and this locking nut is used for this location division is fixed on the outer arbitrarily position of optical fiber tube.
Further improvement as such scheme, this demodulator comprises enclosed box-like body, be housed in the electronic circuit in this box-like body and be installed on this box-like body outer surface and be electrically connected with this electronic circuit LED display, on and off switch and some function buttons, the outer surface of this box-like body also offers optical fiber interface, and this optical fiber interface is used for this optic fibre wire of pegging graft.
Further improvement as such scheme, this electronic circuit comprises measurement light source, photo-coupler, photoelectrolysis parser, analog-digital converter, microprocessor, power supply and memorizer, this microprocessor and this analog-digital converter, this measurement light source, this power supply, this memorizer, this LED display, these some function buttons all are electrically connected, this photo-coupler is connected between this optical fiber interface and this photoelectrolysis parser, this photoelectrolysis parser also is connected in this analog-digital converter, and this measurement light source is connected with this power supply.
Further improvement as such scheme, this venous pressure measuring probe comprises flexible inner, stiff case and stress transmitting medium, this inner bag comprises support, fibre optic compression sensor and tubular film cylinder, this support comprises the first installation end, the second installation end and the connecting rod that connects this first installation end and this second installation end, this first installation end and this second installation end are positioned at the same side of this connecting rod, this first installation end and this second installation end all are smooth hemisphere head, the ball of this first installation end backs down and is provided with the transmitting medium entrance hole, the ball of this second installation end backs down and is provided with the first optical fiber leadout hole, this fibre optic compression sensor is between this first installation end and this second installation end, this tubular film cylinder is accommodated this support, the two ends of this thin film cylinder and this first installation end and this second installation end are fixed, this thin film cylinder, this first installation end and this second installation end form an annular seal space, this fibre optic compression sensor is housed in the sealing intracavity, this transmitting medium entrance hole communicates with the sealing chamber, this fibre optic compression sensor is fixed on this optic fibre wire and makes the optics hot melt with this optic fibre wire and is connected, this optic fibre wire extends the ball top of this second installation end via this first optical fiber leadout hole and is connected with this actuator, this housing comprises the end, package cover and connect this end and this package cover and the tubular accepting groove of opening, this end is smooth hemisphere head, this package cover can be separated with this accepting groove engaging, the top of this package cover vertically stretches out into the post that is threaded, the post that is threaded offers the second optical fiber leadout hole that communicates with this accepting groove, the cross section of this accepting groove is curved, this inner bag is sticked in this accepting groove, the outer surface that is exposed to this outer inner bag of this accepting groove forms flexible test surface, this the first optical fiber leadout hole is located along the same line and communicates with this second optical fiber leadout hole, this optic fibre wire also extends the ball top of this package cover via this second optical fiber leadout hole, this stress transmitting medium is full of the sealing chamber of this inner bag.
As the further improvement of such scheme, this connecting rod is strip, and the two ends of this connecting rod are tangent with this first installation end, this second installation end respectively.
As the further improvement of such scheme, it is material that this housing adopts titanium, aluminium alloy.
As the further improvement of such scheme, be provided with between this inner bag and this accepting groove this inner bag is stabilized in viscose on this accepting groove.
As the further improvement of such scheme, this thin film cylinder is transparence.
As the further improvement of such scheme, this thin film cylinder is the polyurethane layer of thickness 0.03mm.
Esophageal veins survey meter of blood pressure provided by the invention, can be by biopsy hole implant into body esophagus and the implementation and operation of endoscope, so can as with the supporting medical apparatus and instruments of medical endoscope, be used for surveying under the esophageal varicosis state lesions position and implement venopressor measurement.
Description of drawings
The schematic perspective view of the esophageal veins survey meter of blood pressure that Fig. 1 provides for better embodiment of the present invention.
Fig. 2 is the connection diagram of Fig. 1 medium-sized vein blood pressure measurement probe and optical fiber tube.
Fig. 3 is the structural representation of the positioning sleeve of esophageal veins survey meter of blood pressure among Fig. 1.
Fig. 4 is the connection diagram of demodulator and optical fiber tube among Fig. 1.
Fig. 5 is the structural representation of demodulator among Fig. 1.
Fig. 6 is the modular structure figure of demodulator among Fig. 5.
Fig. 7 is the schematic perspective view of the venous pressure measuring probe among Fig. 1.
Fig. 8 is the inner-tube structure schematic diagram of Fig. 7 medium-sized vein blood pressure measurement probe.
Fig. 9 is the supporting structure schematic diagram of inner bag among Fig. 8.
Figure 10 is the shell structure schematic diagram of Fig. 1 medium-sized vein blood pressure measurement probe.
Main symbol description: venous pressure measuring probe 100; Test surface 200; Demodulator 400; Positioning sleeve 600; Location division 601; Turn to handle 603; Locking nut 605; Inner bag 1; Housing 2; Support 20; Fibre optic compression sensor 4; Optical fiber tube 3; Elastic helix sleeve pipe 310; Optic fibre wire 320; Packaging body 500; Joint pin 101; Tubular film cylinder 26; The first installation end 11; The second installation end 13; Connecting rod 12; Transmitting medium entrance hole 14; The first optical fiber leadout hole 15; Annular seal space 10; End 31; Package cover 33; Accepting groove 32; The second optical fiber leadout hole 35; Inserting groove 36; Post 37 is threaded; Box-like body 40; Electronic circuit 42; LED display 59; On and off switch 44; Function button 58; Optical fiber interface 50; Joint portion 301; Light plug 302; Light core 303; Measurement light source 51; Photo-coupler 52; Photoelectrolysis parser 53; Analog-digital converter 54; Microprocessor 55; Power supply 56; Memorizer 57.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
See also Fig. 1, the structural representation of the esophageal veins survey meter of blood pressure that it provides for better embodiment of the present invention.The optical fiber tube 3 that the venae vasorum survey meter of blood pressure comprises venous pressure measuring probe 100, demodulator 400 and is electrically connected this venous pressure measuring probe 100 and this demodulator 400.
Please in conjunction with Fig. 2, optical fiber tube 3 comprises elastic helix sleeve pipe 310 and is housed in single-mode fiber wire 320 in the elastic helix sleeve pipe 310.This venous pressure measuring probe 100 is packaged as a whole by packaging body 500 with the end of this elastic helix sleeve pipe 310, this packaging body 500 is whiplike O-ring cylinder, one end of this optic fibre wire 320 and this venous pressure measuring probe 100 fuse, and the other end and this demodulator 400 are pegged graft.
Elastic helix sleeve pipe 310 is made by stainless steel material, and elastic helix sleeve pipe 310 is mainly used in operation and the protection optic fibre wire 320 of a venous pressure measuring probe 100.Optic fibre wire 320 transmission light varying signals, optic fibre wire 320 two ends connect respectively venous pressure measuring probe 100 and demodulator 400.Venous pressure measuring probe 100 is responded in measuring process and the light varying signal that gathers transfers to demodulator 400 via optic fibre wire 320.Venous pressure measuring probe 100 is connected the other end and grafting demodulator 400 with optic fibre wire 320 1 ends by fusing mode first before encapsulating with optical fiber tube 3 with the fiber-optic output of venous pressure measuring probe 100.Elastic helix sleeve pipe 310 1 ends are fixedly connected with the joint pin 101 of venous pressure measuring probe 100, the other end is fixedly connected with the Optical fiber plug 401 of demodulator 400 again.
See also Fig. 1, Fig. 2 and Fig. 3, be provided with positioning sleeve 600 on the optical fiber tube 3, positioning sleeve 600 be used for setting venous pressure measuring probe 100 endoscope distal end stretch out the position in biopsy hole and adjust pressure measurement probe detection face 200 towards, in actual mechanical process, by operation endoscope and compounding practice positioning sleeve, the test surface 200 of venous pressure measuring probe 100 is contacted, to guarantee stability and the precision of pressure measurement operation time varying signal with the realization of vein blood vessel outer wall and the sufficient face of maintenance (time is not less than 2 seconds).Positioning sleeve 600 comprises the location division 601 that is set on this optical fiber tube 3, turns to handle 603 and locking nut 605.Location division 601 is stretched in the locking nut 605 via the inwall that turns to handle 603, turns to handle 603 to be used for adjusting the radial deflection angle of optical fiber tube 3, and locking nut 605 is used for location division 601 is fixed on optical fiber tube 3 outer any positions.In the present embodiment, positioning sleeve 600 adopts macromolecule thermoplastic material (as: polyamide-610) to shape, can carry over optical fiber tube 3 when unclamping (left-handed) locking nut 605 slides, when tightening (dextrorotation) locking nut 605, can be fixed on optical fiber tube 3 outer any positions, can also turn to handle 603 to adjust the radial deflection angle of optical fiber tubes 3 by deflection when the time comes, thus adjust pressure measurement probe detection face 200 towards (the cylinder anglec of rotation).
See also Fig. 4, Fig. 5 and Fig. 6, demodulator 400 is photoelectric integrated devices, the data processing terminal of the whole systems of the present invention, LED display 59, on and off switch 44 and some function buttons 58 that demodulator 400 comprises enclosed box-like body 40, be housed in the electronic circuit 42 in this box-like body 40 and be installed on these box-like body 40 outer surfaces and be electrically connected with this electronic circuit 42.
The outer surface of box-like body 40 also offers optical fiber interface 50, and optical fiber interface 50 is used for grafting optical fiber tube 3.When optical fiber tube 3 was plugged in optical fiber interface 50, the light plug 302 up-winding fiber interfaces 50 on the joint portion 301 of optical fiber tube 3 were plugged in the optical fiber interface 50 the light core 303 of optical fiber tube 3 and are electrically connected with electronic circuit 42 in the box-like body 40.
Electronic circuit 42 comprises measurement light source 51, photo-coupler 52, photoelectrolysis parser 53, analog-digital converter 54, microprocessor 55, power supply 56 and memorizer 57.Microprocessor 55 all is electrically connected with analog-digital converter 54, measurement light source 51, power supply 56, memorizer 57, LED display 59, some function buttons 58, photo-coupler 52 is connected between optical fiber interface 50 and the photoelectrolysis parser 53, photoelectrolysis parser 53 also is connected in analog-digital converter 54, measurement light source 51 is connected with power supply 56, and power supply 56 also is connected on and off switch 44.
The major function of demodulator 400 is: 1) by measurement light source 51 to the fibre optic compression sensor 4(of venous pressure measuring probe 100 as shown in Figure 8, see also hereinafter and introduce) measurement light source is provided; 2) optical fiber interface 50 acceptance are from the light varying signal of fibre optic compression sensor 4 outputs; 3) photo-coupler 52 cooperates with photoelectrolysis parser 53 the light varying signal is resolved to analog electrical signal; 4) analog digital conversion (A/D) by analog-digital converter 54 changes digital signal again into; 5) digital signal is imported by setup program computing of microprocessor 55, then preserve by LED display 59 output displays with by memorizer 58 systems; 6) about power supply 56, mainly by the internal battery power supply, internal battery can be by external power supply adaptor charging.
See also Fig. 7 and Fig. 8, venous pressure measuring probe 100 comprises flexible inner 1, stiff case 2 and stress transmitting medium (not indicating), and wherein, the stress transmitting medium riddles in the inner bag 1, and inner bag 1 is installed on the housing 2.In the present embodiment, the stress transmitting medium is liquid normal saline (concentration is 0.9% NaCl aqueous solution), certainly in other embodiments can also for other to the nontoxic liquid medium of human body, as select the low coefficient of viscosity and than the constrictive methyl-silicone oil of high resistance (Silicone Oil) etc.
Please in conjunction with Fig. 9 and Figure 10, inner bag 1 comprises support 20, fibre optic compression sensor 4 and tubular film cylinder 26.
Fibre optic compression sensor 4 is between the first installation end 11 and the second installation end 13, fibre optic compression sensor 4 is fixed on the optic fibre wire 320 and with optic fibre wire 320 and is electrically connected, refer to that mainly making the optics hot melt connects, optic fibre wire 320 extends the ball top of the second installation end 13 via the first optical fiber leadout hole 15.
It is material that housing 2 adopts titanium, aluminium alloy, and housing 2 comprises end 31, package cover 33 and connects end 31 and package cover 33 and the tubular accepting groove 32 of opening.End 31 is smooth hemisphere head.Package cover 33 can be separated with accepting groove 32 engagings, and it is a variety of that the mode of engaging has, and in the present embodiment, adopts the mode of conventional inserting groove 36 engagings.The top of package cover 33 vertically stretches out into the post 37 that is threaded, and the post 37 that is threaded offers the second optical fiber leadout hole 35 that communicates with accepting groove 32, and the cross section of accepting groove 32 is curved.
Venous pressure measuring probe 100 encapsulates under normal conditions (being 20 ℃ of normal pressure and temperature environment 101325Pa) and gets final product when mounted, and its installation steps are as follows:
With fibre optic compression sensor 4 and the optic fibre wire 320 that is connected thereof, inboard from the second installation end 13 of internal bladder support 20 outwards passes, the joint portion 301 of sensor 4 and optical fiber tube 3 is fixed on the first optical fiber leadout hole 15 inboards (in the present embodiment, adopt hot melt material fixing as: high density polyethylene (HDPE)), gap between hermetic fiber pipe 3 and the first optical fiber leadout hole 15 makes sensor 4 support by its optical fiber tube that is connected 3 and places on the axis of the second installation end 13 simultaneously;
Two ports of tubular film cylinder 26 are bonding (in the present embodiment with the first installation end 11 of internal bladder support 20 and the second installation end 13 respectively, bonding medium adopt chemical material as: ethyl α-cyanoacrylate), the ball shape that is axial symmetry after tubular film cylinder 26 and internal bladder support 20 are bonding, its the first installation end 11 places leave transmitting medium entrance hole 14, the second installation ends 13 places and draw optical fiber tube 3;
The stress transmitting medium is annotated 14 by the transmitting medium entrance hole enter inner bag, until it reaches full state, then clog transmitting medium entrance hole 14(in the present embodiment, adopt hot melt material as: high density polyethylene (HDPE) filling transmitting medium entrance hole 14), make it form the inner bag 1 with annular seal space 10, the cylinder zone that the annular seal space 10 of this inner bag 1 is filled the stress transmitting medium namely can be used as test surface 200(and is in the present embodiment the rectangle curved surface);
At this moment, this venous pressure measuring probe 100 installs.In the present embodiment, for inner bag 1 can better be stabilized between accepting groove 32, be provided with viscose between inner bag 1 and the accepting groove 32, certainly in other embodiments, this viscose can not adopt yet, the rigidity of the flexibility by inner bag 1 self and accepting groove 32 self combines, simultaneously by end, package cover and accepting groove 32 cooperation each other, can well be firm between inner bag 1 and the accepting groove 32, can not affect the normal use of this venous pressure measuring probe 100.
This venous pressure measuring probe 100 in use, flexible test surface 200 with this measuring probe, ride over measured vein blood vessel surface by post to parallel mode, and apply the applied external force perpendicular to test surface 200, namely measure external force, make the thin film of this flexibility test surface 200 that concavo-convex deformation occur;
When venous pressure was higher than normal pressure, recessed deformation occured in this thin film;
The spatial volume of measuring probe generation deformation and the blood pressure pressure of internal blood vessel are vein pressure, three kinds of active forces of measurement external force that blood vessel surface tension force and operation apply linear with joint efforts, wherein measuring external force acquires a certain degree, be that flexible test surface 200 is when all sticking to blood vessel surface, the numerical value of making a concerted effort that measurement is read keeps relative stability, the numerical value of making a concerted effort of above-mentioned three kinds of active forces is outputed to data analysis device (in the present embodiment, refer to a kind of digital terminal equipment based on microprocessor control special in the industry), in data analysis device, by the algorithm routine calculating acquisition internal blood vessel force value of operation by the empirical model design, i.e. venous pressure value.
This venous pressure measuring probe 100 adapts to clinical medicine and uses, it has the liquid medium of identical internal stress, during by the relative pressing of compliant interface after the encapsulation separately, its zone that is in contact with one another overcomes surface tension generation deformation, and deformation causes the medium internal stress to transmit from high to low and tend to be balanced.Because volume of the present invention is small, can and be deep into inside of human body by its biopsy tool passage by medical endoscope and survey position enforcement pressure measurement operation, can be used as the critical component of non-invasive venous pressure measuring device, adaptation inside of human body venous pressure is that measure, effective non-invasive sniffer.
In sum, the exploration operation process of esophageal veins survey meter of blood pressure is as follows:
1) by operating routine endoscope is implanted detected object (patient) esophagus, observe portal vein lesions position varicosity, determine the venous pressure detecting location;
2) switch (being the on and off switch 44 of system) of unlatching demodulator 400, slowly push with the optical fiber tube 3 insertion endoscopic biopsy holes of venous pressure measuring probe 100 and connection thereof and by this biopsy hole, the video image that shows by endoscope's terminal is simultaneously observed the situation that venous pressure measuring probe 100 arrives endoscope tip, handle install in advance on the optical fiber tube 3 and the positioning sleeve 600 of desired location turn to handle 603, and handle synchronously the guiding controlling organization of detection section of endoscope, the test surface 200 of venous pressure measuring probe 100 is pressed with the parallel contact of venous blood tube wall and by detection section of operation endoscope appropriateness realized the pressure measurement operation;
3) directly watch the aobvious data (data unit of demonstration is mmHg) of the LED display 59 on the demodulator 400, data are beated and are read or preserve (in the memory element of controller) when tending towards stability in the process to be measured, and these data are exactly to survey the venous pressure value at position.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. esophageal veins survey meter of blood pressure, it comprises venous pressure measuring probe, demodulator and the optical fiber tube that is electrically connected this venous pressure measuring probe and this demodulator, it is characterized in that, this optical fiber tube comprises the elastic helix sleeve pipe and is housed in the interior single-mode fiber wire of this elastic helix sleeve pipe, the end of this venous pressure measuring probe and this elastic helix sleeve pipe is packaged as a whole by packaging body, this packaging body is whiplike O-ring cylinder, one end of this optic fibre wire and this venous pressure measuring probe fuse, and the other end and this demodulator are pegged graft.
2. esophageal veins survey meter of blood pressure as claimed in claim 1, it is characterized in that, this esophageal veins survey meter of blood pressure also comprises positioning sleeve, this positioning sleeve comprises the location division that is set on this optical fiber tube, turns to handle and locking nut, this location division turns to the inwall of handle to stretch in this locking nut via this, this turns to handle to be used to adjust the radial deflection angle of this optical fiber tube, and this locking nut is used for this location division is fixed on the outer arbitrarily position of optical fiber tube.
3. esophageal veins survey meter of blood pressure as claimed in claim 1, it is characterized in that, this demodulator comprises enclosed box-like body, be housed in the electronic circuit in this box-like body and be installed on this box-like body outer surface and be electrically connected with this electronic circuit LED display, on and off switch and some function buttons, the outer surface of this box-like body also offers optical fiber interface, and this optical fiber interface is used for this optic fibre wire of pegging graft.
4. esophageal veins survey meter of blood pressure as claimed in claim 3, it is characterized in that, this electronic circuit comprises measurement light source, photo-coupler, photoelectrolysis parser, analog-digital converter, microprocessor, power supply and memorizer, this microprocessor and this analog-digital converter, this measurement light source, this power supply, this memorizer, this LED display, these some function buttons all are electrically connected, this photo-coupler is connected between this optical fiber interface and this photoelectrolysis parser, this photoelectrolysis parser also is connected in this analog-digital converter, and this measurement light source is connected with this power supply.
5. esophageal veins survey meter of blood pressure as claimed in claim 1, it is characterized in that, this venous pressure measuring probe comprises flexible inner, stiff case and stress transmitting medium, this inner bag comprises support, fibre optic compression sensor and tubular film cylinder, this support comprises the first installation end, the second installation end and the connecting rod that connects this first installation end and this second installation end, this first installation end and this second installation end are positioned at the same side of this connecting rod, this first installation end and this second installation end all are smooth hemisphere head, the ball of this first installation end backs down and is provided with the transmitting medium entrance hole, the ball of this second installation end backs down and is provided with the first optical fiber leadout hole, this fibre optic compression sensor is between this first installation end and this second installation end, this tubular film cylinder is accommodated this support, the two ends of this thin film cylinder and this first installation end and this second installation end are fixed, this thin film cylinder, this first installation end and this second installation end form an annular seal space, this fibre optic compression sensor is housed in the sealing intracavity, this transmitting medium entrance hole communicates with the sealing chamber, this fibre optic compression sensor is fixed on this optical fiber tube and makes the optics hot melt with this optic fibre wire and is connected, this optic fibre wire extends the ball top of this second installation end via this first optical fiber leadout hole and is connected with this actuator, this housing comprises the end, package cover and connect this end and this package cover and the tubular accepting groove of opening, this end is smooth hemisphere head, this package cover can be separated with this accepting groove engaging, the top of this package cover vertically stretches out into the post that is threaded, the post that is threaded offers the second optical fiber leadout hole that communicates with this accepting groove, the cross section of this accepting groove is curved, this inner bag is sticked in this accepting groove, the outer surface that is exposed to this outer inner bag of this accepting groove forms flexible test surface, this the first optical fiber leadout hole is located along the same line and communicates with this second optical fiber leadout hole, this optic fibre wire also extends the ball top of this package cover via this second optical fiber leadout hole, this stress transmitting medium is full of the sealing chamber of this inner bag.
6. esophageal veins survey meter of blood pressure as claimed in claim 5 is characterized in that, this connecting rod is strip, and the two ends of this connecting rod are tangent with this first installation end, this second installation end respectively.
7. esophageal veins survey meter of blood pressure as claimed in claim 5 is characterized in that, it is material that this housing adopts titanium, aluminium alloy.
8. esophageal veins survey meter of blood pressure as claimed in claim 5 is characterized in that, is provided with between this inner bag and this accepting groove this inner bag is stabilized in viscose on this accepting groove.
9. esophageal veins survey meter of blood pressure as claimed in claim 5 is characterized in that, this thin film cylinder is transparence.
10. such as claim 5 or 9 described esophageal veins survey meter of blood pressure, it is characterized in that, this thin film cylinder is the polyurethane layer of thickness 0.03mm.
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| CN2012104504658A CN102908133A (en) | 2012-11-12 | 2012-11-12 | Esophagus vein blood pressure measuring instrument |
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| CN2012104504658A CN102908133A (en) | 2012-11-12 | 2012-11-12 | Esophagus vein blood pressure measuring instrument |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103961076A (en) * | 2014-05-26 | 2014-08-06 | 中南大学湘雅三医院 | Esophageal varicosity noninvasive manometric system |
| CN105433930A (en) * | 2015-12-31 | 2016-03-30 | 合肥优尔电子科技有限公司 | Optical fiber pressure measuring device |
| CN105433929A (en) * | 2015-12-31 | 2016-03-30 | 合肥优尔电子科技有限公司 | Probing conduit for optical fiber pressure measuring device |
| CN105476648A (en) * | 2015-12-30 | 2016-04-13 | 宁波迈达医疗仪器有限公司 | Conduit for detecting intraluminal pressure of human body and animal |
| CN105662386A (en) * | 2015-12-31 | 2016-06-15 | 合肥优尔电子科技有限公司 | Voltage detecting probe of optical fiber voltage detecting device |
| CN106388800A (en) * | 2016-02-19 | 2017-02-15 | 深圳北芯生命科技有限公司 | Catheter capable of measuring pressure in blood vessel |
| CN108348180A (en) * | 2015-09-04 | 2018-07-31 | 波士顿科学国际有限公司 | Pressure sensing seal wire |
| CN109363654A (en) * | 2018-12-10 | 2019-02-22 | 西安交通大学 | A kind of noninvasive Gastroesophageal cirso- pressure detecting instrument |
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