CN102988092A - Quantitative limiting device of blood flow - Google Patents
Quantitative limiting device of blood flow Download PDFInfo
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- CN102988092A CN102988092A CN2012104354190A CN201210435419A CN102988092A CN 102988092 A CN102988092 A CN 102988092A CN 2012104354190 A CN2012104354190 A CN 2012104354190A CN 201210435419 A CN201210435419 A CN 201210435419A CN 102988092 A CN102988092 A CN 102988092A
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Abstract
The invention provides a quantitative limiting device of blood flow. The quantitative limiting device of the blood flow comprises a blood flow detecting and limiting device, and a control system, wherein the blood flow detecting and limiting device is an ultrasonic doppler probe; the ultrasonic doppler probe comprises a probe support, a V-shaped arm and a metal reflecting plate; the V-shaped arm is connected with the probe support through a first connecting rod; two ultrasonic transmitting and receiving surfaces are symmetrically arranged at the inner side of a V-shaped opening of the V-shaped arm; the metal reflecting plate is vertical to a symmetrical shaft of the ultrasonic transmitting and receiving surfaces, and is arranged at one side of the V-shaped opening of the V-shaped arm; a second connecting rod fixed on the metal reflecting plate is connected with the probe support; and the axial length of the metal reflecting plate on the blood vessel is close to the axial length of the V-shaped arm on the blood vessel. By adopting the quantitative limiting device of the blood flow, the blood flow of a visceral organ can be quantitatively and accurately limited, and the minimal effect on the function of the visceral organ is achieved when the minimal bleeding volume in a surgical operation is ensured.
Description
Technical field
The present invention relates to field of medical technology, relate in particular to a kind of device that the blood flow of vascular system is quantitatively limited.
Background technology
In the modern liver surgery, restriction enters liver, goes out hepatic blood flow, reduces intraoperative hemorrhage, has become the basis of hepatectomy.But present document both domestic and external, in the hepatectomy method that the liver blood flow of one of important technology limits the most, no matter be the most classical, most widely used hepatic pedicle bloodstream blocking method, or full hepatic vascular exclusion method, half hepatic vascular exclusion method, half liver that keeps the arterial blood confession enters the hepatic vascular exclusion method, keep Hepatic artery and be interrupted the pylic hepatic vascular exclusion method of blocking-up, enter the hepatic vascular exclusion method through Glisson sheath system subregion, the methods such as hepatic segments bloodstream blocking method, its emphasis mainly concentrates on blocks liver vessel kind (portal vein, Hepatic artery, hepatic vein), perhaps position (the trunk of blocking blood flow, lobe of the liver, the hepatic segments blood flow), perhaps Xining (continues, be interrupted, alternately), for the restriction of target blood " fully open " only arranged, " fully blocking-up " two kinds.When blocking fully, operation on liver is hemorrhage less, but liver function is affected; When fully open, hepatic blood supply is abundant, and amount of bleeding is very large, in the art, post-operative complication is many; Of short duration folder closes rear opening, on the one hand since folder to close the time of short duration, affect the operation process, on the other hand liver is produced " ischemia-reperfusion " and damages.Therefore, the expectation of surgery of liver clinical medicine can quantification be controlled liver blood flow, and then reaches when guaranteeing operation on liver blood loss minimum, realizes the minimum influence to liver function.
At present, ultrasonic Doppler technique is very ripe aspect monitoring vessel inner blood flow velocity, flow, and is widely used in the detection of clinical cardiovascular System Dependent index.Simultaneously, regulating the vascular clamp folder closes to block the arteriovenous blood flow and has been widely used in various zooperies and the clinical operation (relating to blood vessel).Therefore, hope can provide in conjunction with prior art the device of a kind of quantification, precision restriction internal organs blood flow, ensures the safety of operation.
Summary of the invention
The technical problem that (one) will solve
The technical problem to be solved in the present invention provide a kind of can quantification in surgical operation, the volumetric blood flow restraint device of precision restriction internal organs blood flow, it can when guaranteeing surgical operation blood loss minimum, realize the minimum influence to organ function.
(2) technical scheme
For reaching above-mentioned purpose, volumetric blood flow restraint device of the present invention comprises blood flow detection and restraint device and control system 2, and described blood flow detection and restraint device are connected with described control system 2.
Described blood flow is surveyed and restraint device is ultrasonic Doppler probe, described ultrasonic Doppler probe comprises probe bearing 11, " V " font arm 3 and one nugget genus reflecting plate 5, described " V " font arm 3 is connected with described probe bearing 11 by first connecting rod 12, " V " font opening inboard of described " V " font arm 3 is arranged with two ultrasound emission receiving planes 8, described metallic reflection plate 5 is vertical with the axis of symmetry of described ultrasound emission receiving plane 8, and be positioned at " V " font opening one side of described " V " font arm 3, the second connecting rod 6 that is fixed in metallic reflection plate 5 is connected with probe bearing 11.
Described metallic reflection plate 5 approaches in blood vessel 7 axial length at the axial length of blood vessel 7 and described " V " font arm 3.
Described " V " font arm 3 is connected with regulating electric machine 4 by the first connecting rod 12 that passes described probe bearing 11, described " V " font arm 3 can drive moving axially along first connecting rod 12 by regulating electric machine 4, described metallic reflection plate 5 is regulated by described control system 2 regulating and controlling motors 4 to the distance between " V " font arm 3.
Described regulating electric machine 4 is micromachine.
Be fixed with first metal bar 9 parallel with described metallic reflection plate 5 at described " V " font arm 3 two ends near described metallic reflection plate 5 one sides, be fixed with second metal bar 10 corresponding with the first metal bar 9 on described " V " font arm 3 at described metallic reflection plate 5.
Preferably, be coated with medical grade rubber on described the first metal bar 9 and the second metal bar 10.
Described control system 2 links to each other with man machine interface 1.
Preferably, described volumetric blood flow restraint device also comprises timing and warning regulating system, described timing and warning regulating system link to each other with control system 2, by the timing that increases in described man machine interface 1 and the adjusting button of reporting to the police described ultrasonic Doppler probe are operated.
Described timing and the adjusting button of reporting to the police comprise that countdown stopwatch, alarm lamp, cancellation alarm button, preset flow arrange frame, frame is set Preset Time and default warning arranges frame.
(3) beneficial effect
The device that the present invention adopts technique scheme to provide can pass through the blood flow of quantification, precision restriction internal organs, when guaranteeing surgical operation blood loss minimum, realizes the minimum influence to organ function.Because there is individual variation in operation, the present invention can dynamically show the variation of target blood flow in the operation process in man machine interface.Surgical doctor can be by prediction scheme before the art, and default folder closes the time, default folder closes degree and warning.In the operation real process, the present invention gives the surgical doctor alarm automatically, guarantees that operation safety carries out.Employing the present invention can find best blood flow restricted version and the blood flow restriction proportion in the surgical procedures, and then reduces as far as possible intraoperative blood loss, prolongs as far as possible the internal organs Ischemic tolerance, reaches the purpose of protecting to greatest extent organ function.
Description of drawings
Fig. 1 is the schematic diagram of volumetric blood flow restraint device of the present invention;
Fig. 2 is the structure chart of ultrasonic Doppler probe;
Fig. 3 is the control system structure chart of volumetric blood flow restraint device of the present invention;
Fig. 4 is the sketch map of man machine interface.
Among the figure, 1: man machine interface; 2: control system; 3: " V " font arm; 4: regulating electric machine; 5: the metallic reflection plate; 6: second connecting rod; 7: blood vessel; 8: the ultrasound emission receiving plane; 9: the first metal bars; 10: the second metal bars; 11: the probe bearing; 12: first connecting rod.
The specific embodiment
Below in conjunction with drawings and Examples volumetric blood flow restraint device of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
In description of the invention, need to prove, term " mid point ", " vertically ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only be for convenience of description the present invention and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only are used for describing purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, need to prove that unless clear and definite regulation and restriction are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can indirectly link to each other by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
In addition, in description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
As shown in Figure 1, volumetric blood flow restraint device of the present invention comprises blood flow detection and restraint device and control system 2, and described blood flow detection and restraint device are connected with described control system 2.
As shown in Figure 2, described blood flow is surveyed and restraint device is ultrasonic Doppler probe, described ultrasonic Doppler probe comprises probe bearing 11, " V " font arm 3 and one nugget genus reflecting plate 5, described " V " font arm 3 is connected with described probe bearing 11 by first connecting rod 12, " V " font opening inboard of described " V " font arm 3 is arranged with two ultrasound emission receiving planes 8, described metallic reflection plate 5 is vertical with the axis of symmetry of described ultrasound emission receiving plane 8, and be positioned at " V " font opening one side of described " V " font arm 3, the second connecting rod 6 that is fixed in metallic reflection plate 5 is connected with probe bearing 11, and described metallic reflection plate 5 is approaching in the axial length of blood vessel 7 at the axial length of blood vessel 7 and described " V " font arm 3.
Be fixed with first metal bar 9 parallel with described metallic reflection plate 5 at described " V " font arm 3 two ends near described metallic reflection plate 5 one sides, be fixed with second metal bar 10 corresponding with the first metal bar 9 on described " V " font arm 3 at described metallic reflection plate 5.Preferably, be coated with medical grade rubber on described the first metal bar 9 and the second metal bar 10.Preferably, described medical grade rubber is silica gel.
Described metallic reflection plate 5 is adjustable to the distance between " V " font arm 3, the center of the center of described two ultrasound emission receiving planes 8 and metallic reflection plate 5 consists of the isosceles triangle take the line of centres of two ultrasound emission receiving planes 8 as the base, to guarantee as far as possible detection accuracy.Described " V " font arm 3 is connected with regulating electric machine 4 by the first connecting rod 12 that passes described probe bearing 11, and described " V " font arm 3 can drive moving axially along first connecting rod 12 by regulating electric machine 4.Described metallic reflection plate 5 is regulated by described control system 2 regulating and controlling motors 4 to the distance between " V " font arm 3, with the blood flow in the restriction blood vessel 7.First numerical value when coming in contact take " V " font arm 3, metallic reflection plate 5 and blood vessel 7 threes is the initial value of current limliting not, and setting percentage ratio is 100%.Control system 2 regulating and controlling motors 4, compression " V " font arm 3 is with the space between the metal mirror, and extruding blood vessel 7 is brought into play metering function.In current limliting, ultrasonic Doppler probe is monitored the reality of compressed blood vessel 7 by blood flow, and reality is compared with primary quantity by blood flow, records percentage ratio.Preferably, described regulating electric machine 4 is micromachine.Described control system 2 will be by digital control system when adjusting metallic reflection plate 5 and limiting blood flow volume blood vessel 7 in to the distance between " V " font arm 3, and correction Doppler computing formula is with the Real-Time Monitoring value of demonstration blood flow.
Described control system 2 links to each other with man machine interface 1.In compression blood vessel 7, the tube chamber sectional area of blood vessel 7 will change, and turbulization exerts an influence to detection accuracy inevitably.Can proofread and correct by statistical method by the blood flow measured value of comparison current limliting distal end, in man machine interface 1, directly show the exact value of blood flow.
The ultrasonic Doppler probe operation principle is: DOPPLER ULTRASOUND SIGNAL is sent from the ultrasound emission receiving plane 8 that is installed on ultrasonic Doppler probe " V " the font arm 3 simultaneously, there is an adjustable metallic reflection plate 5 in " V " font arm 3 offsides, and blood vessel 7 is positioned between " V " font arm 3 and the metallic reflection plate 5.Take a side signal as example, after signal was sent by the ultrasound emission receiving plane 8 of one " V " font arm 3, intravascular 7 blood flows were beaten on the metallic reflection plate 5 of blood vessel 7 opposite sides, again pass through blood vessel 7 through reflection, received by the ultrasound emission receiving plane 8 on offside " V " the font arm 3.Two ultrasound emission receiving planes 8 jointly send, receive signal, and according to Doppler effect, namely will produce skew between reflection frequency and the tranmitting frequency is Doppler frequency shift Δ f, is provided by following formula:
Δf＝2vf
0cos?θ/C
In the formula, v is erythrocytic movement velocity, f
0Be the frequency of ultrasonic Doppler probe generation ultrasonic signal, θ is angulation between ultrasonic emitting and the reception, and C is hyperacoustic speed.Can be found out by formula, be directly proportional with blood flow rate, just can try to achieve v if detect Δ f.The bilateral signal transfers to ultrasonic machine, through conventional sense, records blood vessel 7 interior blood flows to be measured.
Described control system 2 links to each other with man machine interface 1.Blood flow restriction and sniffer are finished restriction and are surveyed blood flow, and the ultrasound data of collection will transfer to the ultrasonic instrument main frame by data wire, and directly are presented at blood flow under this blood flow restriction state by man machine interface 1.
Simultaneously, man machine interface 1 is mated in the present invention specially, is small-sized liquid crystal data display equipment in the present embodiment, by the data line of ultrasonic instrument main frame, with above-mentioned transfer of data to the described man machine interface 1.
As shown in Figure 4, data show is divided into three parts: the absolute value of blood flow, the maximum of blood flow and blood flow limited degree are the percentage ratio (first numerical value when coming in contact take " V " font arm 3, metallic reflection plate 5 and blood vessel 7 threes is the initial value of current limliting not, and setting percentage ratio is 100%) of bloodstream blocking.In the described man machine interface 1 adjusting knob is installed, is connected the regulating electric machine 4 by control system 2 controls.By regulating adjusting knob blood vessel 7 is pressurizeed or decompression, and show in real time blood flow value and controlled rear blood flow percentage ratio, reach the digitized current limliting to blood vessel 7, realize the controllability monitoring to blood flow.
Described volumetric blood flow restraint device also comprises timing and warning regulating system, and described timing and warning regulating system link to each other with control system 2, by the timing that increases in described man machine interface 1 and the adjusting button of reporting to the police described ultrasonic Doppler probe is operated.Described timing and the adjusting button of reporting to the police comprise that countdown stopwatch, alarm lamp, cancellation alarm button, preset flow arrange frame, frame is set Preset Time and default warning arranges frame.
The operation of timing and warning regulating system is divided into following four kinds of situations:
Preset state: before operation, discuss and the preparatory stage, surgical doctor can precisely be assessed the organ function of surgical object, judge the internal organs Ischemic tolerance, goal-selling vascular flow limited degree and time and target blood warning blood flow limited degree and time, and beginning countdown;
The state of alert: not yet finish if reach the Preset Time operation, timing and warning regulating system are then at first sent of short duration warning (5 seconds), then by feedback system, automatically adjust the blood flow restraint device blood flow is transferred to blood flow restriction warning value, and the countdown of beginning blood flow restriction alert time;
The danger warning state: if arrive blood flow restriction warning countdown intermediate node, operation not yet finishes, and then enters the danger warning state, long-time uninterrupted warning of beginning;
Report to the police and eliminate: surgical doctor can be adjusted preset value and warning value at any time according to concrete condition in the operation, reports to the police thereby eliminate.If be on the alert, surgical doctor clicks " cancellation is reported to the police " button, reports to the police and then at once removes; If be in the danger warning state, when surgical doctor is not adjusted preset value and warning value, surgical doctor clicks " cancellation is reported to the police " button, reporting to the police only is interim disarm state and noise reduction, but man machine interface " is dodged screen ", and state continuance exists, and recovers to continue the alarm sound after 1 minute with the prompting surgical doctor.
Described volumetric blood flow restraint device also comprises ancillary equipment, such as power line, on and off switch etc.
Above embodiment only is used for explanation the present invention, and be not limitation of the present invention, the those of ordinary skill in relevant technologies field is in the situation that does not break away from the spirit and scope of the present invention, can also make a variety of changes and modification, so all technical schemes that are equal to also belong to category of the present invention.
Claims (10)
1. volumetric blood flow restraint device, it is characterized in that: described volumetric blood flow restraint device comprises blood flow detection and restraint device and control system (2), and described blood flow detection and restraint device are connected with described control system (2).
2. volumetric blood flow restraint device according to claim 1, it is characterized in that: described blood flow is surveyed and restraint device is ultrasonic Doppler probe, described ultrasonic Doppler probe comprises probe bearing (11), " V " font arm (3) and a nugget genus reflecting plate (5), described " V " font arm (3) is connected with described probe bearing (11) by first connecting rod (12), " V " font opening inboard of described " V " font arm (3) is arranged with two ultrasound emission receiving planes (8), described metallic reflection plate (5) is vertical with the axis of symmetry of described ultrasound emission receiving plane (8), and be positioned at " V " font opening one side of described " V " font arm (3), the second connecting rod (6) that is fixed in metallic reflection plate (5) is connected with probe bearing (11).
3. volumetric blood flow restraint device according to claim 2 is characterized in that: described metallic reflection plate (5) approaches in the axial length of blood vessel (7) at blood vessel (7) axial length and described " V " font arm (3).
4. volumetric blood flow restraint device according to claim 3, it is characterized in that: described " V " font arm (3) is connected with regulating electric machine (4) by the first connecting rod (12) that passes described probe bearing (11), described " V " font arm (3) can drive moving axially along first connecting rod (12) by regulating electric machine (4), described metallic reflection plate (5) is regulated by described control system (2) regulating and controlling motor (4) to the distance between " V " font arm (3).
5. volumetric blood flow restraint device according to claim 4, it is characterized in that: described regulating electric machine (4) is micromachine.
6. each described volumetric blood flow restraint device according to claim 1-5, it is characterized in that: be fixed with first metal bar (9) parallel with described metallic reflection plate (5) at described " V " font arm (3) two ends near described metallic reflection plate (5) one sides, be fixed with second metal bar (10) corresponding with the first metal bar (9) on described " V " the font arm (3) at described metallic reflection plate (5).
7. volumetric blood flow restraint device according to claim 6 is characterized in that: be coated with medical grade rubber on described the first metal bar (9) and the second metal bar (10).
8. volumetric blood flow restraint device according to claim 7, it is characterized in that: described control system (2) links to each other with man machine interface (1).
9. volumetric blood flow restraint device according to claim 8, it is characterized in that: described volumetric blood flow restraint device also comprises timing and warning regulating system, described timing and warning regulating system link to each other with control system (2), by the timing that increases in described man machine interface (1) and the adjusting button of reporting to the police described ultrasonic Doppler probe are operated.
10. volumetric blood flow restraint device according to claim 9 is characterized in that: described timing and report to the police and regulate button and comprise that countdown stopwatch, alarm lamp, cancellation alarm button, preset flow arrange frame, frame is set Preset Time and default warning arranges frame.
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| CN201210435419.0A CN102988092B (en) | 2012-11-02 | 2012-11-02 | Quantitative limiting device of blood flow |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210435419.0A CN102988092B (en) | 2012-11-02 | 2012-11-02 | Quantitative limiting device of blood flow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112912009A (en) * | 2018-10-22 | 2021-06-04 | 谷和雄 | Blood flow volume probe, blood flow volume sensor, and blood flow volume measuring instrument |
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| CN202942169U (en) * | 2012-11-02 | 2013-05-22 | 中国人民解放军总医院 | Blood flow quantitative limit device |
| CN202960635U (en) * | 2012-11-02 | 2013-06-05 | 中国人民解放军总医院 | Blood flow quantification limiting device |
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2012
- 2012-11-02 CN CN201210435419.0A patent/CN102988092B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5062427A (en) * | 1988-05-06 | 1991-11-05 | Kabushiki Kaisha Toshiba | Ultrasonic doppler apparatus |
| US6053891A (en) * | 1996-08-26 | 2000-04-25 | Decampli; William M. | Apparatus and methods for providing selectively adjustable blood flow through a vascular graft |
| CN1257695A (en) * | 1999-12-30 | 2000-06-28 | 复旦大学 | Dual-ultrasonic Doppler method for measuring blood flow speed |
| CN101084415A (en) * | 2004-12-21 | 2007-12-05 | 罗伯特·博世有限公司 | Ultrasonic flowmeter having a pressure sensor |
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| CN101884552A (en) * | 2010-07-19 | 2010-11-17 | 云南大学 | Adjusting and fixing device of ultrasonic inspection probe for alliteration beam carotid artery |
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| CN112912009A (en) * | 2018-10-22 | 2021-06-04 | 谷和雄 | Blood flow volume probe, blood flow volume sensor, and blood flow volume measuring instrument |
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