CN102988092B - Quantitative limiting device of blood flow - Google Patents
Quantitative limiting device of blood flow Download PDFInfo
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- CN102988092B CN102988092B CN201210435419.0A CN201210435419A CN102988092B CN 102988092 B CN102988092 B CN 102988092B CN 201210435419 A CN201210435419 A CN 201210435419A CN 102988092 B CN102988092 B CN 102988092B
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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 carried out to quantitative restriction.
Background technology
In modern liver surgery, limit into liver, go out hepatic blood flow, reduce intraoperative hemorrhage, become the basis of hepatectomy.But current 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 retains arterial blood confession enters hepatic vascular exclusion method, retain Hepatic artery and be interrupted the pylic hepatic vascular exclusion method of blocking-up, enter 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), or the position (trunk of blocking blood flow, lobe of the liver, hepatic segments blood flow), or Xining (continues, be interrupted, alternately), and only have " completely open " for the restriction of target blood, " blocking-up completely " two kinds.While blocking-up completely, operation on liver is hemorrhage less, but liver function is affected; When completely open, hepatic blood supply is abundant, and amount of bleeding is very large, in art, post-operative complication is many; Of short duration folder closes rear opening, and on the one hand due to folder, to close the time of short duration, affect operation process, on the other hand liver produced to " ischemia-reperfusion " and damage.Therefore, surgery of liver clinical medicine is expected can quantification control liver blood flow, and then reaches in ensureing 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 index of correlation.Meanwhile, regulating vascular clamp folder to close to block arteriovenous blood flow has been widely used in various zooperies and 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
(1) technical problem that will solve
The technical problem to be solved in the present invention be to provide a kind of can quantification in surgical operation, the volumetric blood flow restraint device of precision restriction internal organs blood flow, it can, in ensureing 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 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 inner side 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 on metallic reflection plate 5 is connected with probe bearing 11.
Described metallic reflection plate 5 approaches in the axial length of blood vessel 7 in the axial length of blood vessel 7 and described " V " font arm 3.
Described " V " font arm 3 is connected with regulating motor 4 by the first connecting rod 12 through described probe bearing 11, described " V " font arm 3 can be by regulating motor 4 to drive moving axially along first connecting rod 12, described metallic reflection plate 5, to the distance between " V " font arm 3, is regulated by described control system 2 regulating and controlling motors 4.
Described adjusting motor 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, on described metallic reflection plate 5, be fixed with second metal bar 10 corresponding with the first metal bar 9 on described " V " font arm 3.
Preferably, on described the first metal bar 9 and the second metal bar 10, be coated with medical grade rubber.
Described control system 2 is connected 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 are connected with control system 2, by the timing increasing 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, in ensureing surgical operation blood loss minimum, realizes the minimum influence to organ function.Because operation exists individual variation, the present invention can dynamically show the variation of target blood flow in operation process in man machine interface.Surgical doctor can be by preoperative prediction scheme, and default folder closes the time, default folder closes degree and warning.In operation real process, the present invention gives surgical doctor alarm automatically, ensures that operation safety carries out.Adopt the present invention can find best blood flow restricted version and the blood flow restriction proportion in surgical procedures, and then reduce as far as possible intraoperative blood loss, extend as far as possible internal organs Ischemic tolerance, reach the object of protecting to greatest extent organ function.
Brief description of the 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 schematic diagram of man machine interface.
In figure, 1: man machine interface; 2: control system; 3: " V " font arm; 4: regulate motor; 5: metallic reflection plate; 6: second connecting rod; 7: blood vessel; 8: ultrasound emission receiving plane; 9: the first metal bars; 10: the second metal bars; 11: probe bearing; 12: first connecting rod.
Detailed description of the invention
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 illustrating the present invention, but are not used for limiting the scope of the invention.
In description of the invention, it should be noted that, term " mid point ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of instructions such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of device or the element of instruction 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 " be only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected 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 " multiple " 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 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 inner side 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 on metallic reflection plate 5 is connected with probe bearing 11, described metallic reflection plate 5 approaches in the axial length of blood vessel 7 in 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, on described metallic reflection plate 5, be fixed with second metal bar 10 corresponding with the first metal bar 9 on described " V " font arm 3.Preferably, on described the first metal bar 9 and the second metal bar 10, be coated with medical grade rubber.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 forms the isosceles triangle taking the line of centres of two ultrasound emission receiving planes 8 as base, to ensure as far as possible detection accuracy.Described " V " font arm 3 is connected with regulating motor 4 by the first connecting rod 12 through described probe bearing 11, and described " V " font arm 3 can be by regulating motor 4 to drive moving axially along first connecting rod 12.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, to limit the blood flow in blood vessel 7.First numerical value while coming in contact taking " 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 metal mirror, and extruding blood vessel 7, brings 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 adjusting motor 4 is micromachine.Described control system 2, when adjustment metallic reflection plate 5 limits the blood flow volume in blood vessel 7 to the distance between " V " font arm 3, will, by digital control system, be revised Doppler's computing formula, to show the Real-Time Monitoring value of blood flow.
Described control system 2 is connected with man machine interface 1.In compression blood vessel 7, the tube chamber sectional area of blood vessel 7 will change, and inevitably turbulization, exerts an influence to detection accuracy.Can, by the blood flow measured value of comparison current limliting distal end, proofread and correct by statistical method, in man machine interface 1, directly show the exact value of blood flow.
Ultrasonic Doppler probe operation principle is: DOPPLER ULTRASOUND SIGNAL is sent from the ultrasound emission receiving plane 8 being installed on ultrasonic Doppler probe " V " font arm 3 simultaneously, there is an adjustable metallic reflection plate 5 in " V " font arm 3 offsides, blood vessel 7 is positioned between " V " font arm 3 and metallic reflection plate 5.Taking a side signal as example, after signal is sent by the ultrasound emission receiving plane 8 of one " V " font arm 3, intravascular 7 blood flows, beat 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 " font arm 3.Two ultrasound emission receiving planes 8 jointly send, receive signal, according to Doppler effect, between reflection frequency and tranmitting frequency, are Doppler frequency shift Δ f by generation skew, are provided by following formula:
Δf＝2vf
0cos θ/C
In formula, v is erythrocytic movement velocity, f
0for the frequency of ultrasonic Doppler probe generation ultrasonic signal, θ is angulation between ultrasonic emitting and reception, and C is hyperacoustic speed.Can be found out by formula, be directly proportional to blood flow rate, just can try to achieve v if detect Δ f.Bilateral signal transfers to ultrasonic machine, through conventional sense, records the interior blood flow of blood vessel 7 to be measured.
Described control system 2 is connected with man machine interface 1.Blood flow restriction and sniffer complete restriction and survey blood flow, and the ultrasound data of collection will transfer to ultrasonic instrument main frame by data wire, and directly be presented at the blood flow under this blood flow restriction state by man machine interface 1.
Meanwhile, 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, by above-mentioned transfer of data in 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 while coming in contact taking " 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 described man machine interface 1, adjusting knob is installed, is connected the adjusting motor 4 of being controlled by control system 2.By regulating adjusting knob that blood vessel 7 is pressurizeed or reduced pressure, 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 are connected with control system 2, by the timing increasing 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: discuss and the preparatory stage before operation, surgical doctor can precisely be assessed the organ function of surgical object, judge internal organs Ischemic tolerance, goal-selling vascular flow limited degree and time and target blood warning blood flow limited degree and time, and start countdown;
The state of alert: not yet finish if reach Preset Time operation, first timing and warning regulating system send of short duration warning (5 seconds), then by feedback system, automatically adjust blood flow restraint device blood flow is adjusted to blood flow restriction warning value, and start the countdown of blood flow restriction alert time;
Danger warning state: if arrive blood flow restriction warning countdown intermediate node, operation not yet finishes, and enters danger warning state, starts long-time uninterrupted warning;
Report to the police and eliminate: surgical doctor can, according to concrete condition in operation, be adjusted preset value and warning value at any time, reports to the police thereby eliminate.If be on the alert, surgical doctor clicks " cancel and reporting to the police " button, reports to the police and at once removes; If in danger warning state, when surgical doctor is not adjusted preset value and warning value, surgical doctor clicks " cancel and reporting to the police " button, reporting to the police is only interim disarm state noise reduction, but man machine interface " is dodged screen ", and state continuance exists, after 1 minute, recover to continue alarm sound with prompting surgical doctor.
Described volumetric blood flow restraint device also comprises ancillary equipment, as power line, on and off switch etc.
Above embodiment is only for illustrating the present invention, and be not limitation of the present invention, the those of ordinary skill in relevant technologies field, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all technical schemes that are equal to also belong to category of the present invention.
Claims (7)
1. a volumetric blood flow restraint device, 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);
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 inner side 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 on metallic reflection plate (5) is connected with probe bearing (11),
Described metallic reflection plate (5) approaches in the axial length of blood vessel (7) in the axial length of blood vessel (7) and described " V " font arm (3);
Described " V " font arm (3) is connected with regulating motor (4) by the first connecting rod (12) through described probe bearing (11), described " V " font arm (3) can be by regulating motor (4) to drive moving axially along first connecting rod (12), described metallic reflection plate (5), to the distance between " V " font arm (3), is regulated by described control system (2) regulating and controlling motor (4).
2. volumetric blood flow restraint device according to claim 1, is characterized in that: described adjusting motor (4) is micromachine.
3. according to the volumetric blood flow restraint device described in claim 1-2 any one, 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, on described metallic reflection plate (5), be fixed with second metal bar (10) corresponding with the first metal bar (9) on described " V " font arm (3).
4. volumetric blood flow restraint device according to claim 3, is characterized in that: on described the first metal bar (9) and the second metal bar (10), be coated with medical grade rubber.
5. volumetric blood flow restraint device according to claim 4, is characterized in that: described control system (2) is connected with man machine interface (1).
6. volumetric blood flow restraint device according to claim 5, it is characterized in that: described volumetric blood flow restraint device also comprises timing and warning regulating system, described timing and warning regulating system are connected with control system (2), by described ultrasonic Doppler probe being operated in the upper timing increasing of described man machine interface (1) and the adjusting button of reporting to the police.
7. volumetric blood flow restraint device according to claim 6, is characterized in that: 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN102988092A CN102988092A (en) | 2013-03-27 |
| CN102988092B true CN102988092B (en) | 2014-10-08 |
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| JP6592164B1 (en) * | 2018-10-22 | 2019-10-16 | 束原 幸俊 | Blood flow probe, blood flow sensor, and blood flow measuring instrument |
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| 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 |
| CN101081170A (en) * | 2006-06-02 | 2007-12-05 | 株式会社东芝 | Ultrasonic doppler diagnostic apparatus, and method of controlling ultrasonic doppler diagnostic apparatus |
| CN101084415A (en) * | 2004-12-21 | 2007-12-05 | 罗伯特·博世有限公司 | Ultrasonic flowmeter having a pressure sensor |
| 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 |
| 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 |
-
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 |
| CN101081170A (en) * | 2006-06-02 | 2007-12-05 | 株式会社东芝 | Ultrasonic doppler diagnostic apparatus, and method of controlling ultrasonic doppler diagnostic apparatus |
| 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 |
| 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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