CN201691912U - Device for detecting myocardial fractional flow reserve through micro catheter - Google Patents
Device for detecting myocardial fractional flow reserve through micro catheter Download PDFInfo
- Publication number
- CN201691912U CN201691912U CN2010202238191U CN201020223819U CN201691912U CN 201691912 U CN201691912 U CN 201691912U CN 2010202238191 U CN2010202238191 U CN 2010202238191U CN 201020223819 U CN201020223819 U CN 201020223819U CN 201691912 U CN201691912 U CN 201691912U
- Authority
- CN
- China
- Prior art keywords
- pressure
- microguide
- flow reserve
- display device
- micro catheter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The utility model relates to a device for detecting the myocardial fractional flow reserve through a micro catheter, which is characterized in that the micro catheter, an external piezometer tube, an external pressure transducer and a display device are included, wherein the micro catheter is provided with a pipe body part, and a pointed end and a tail end are arranged at the pipe body part; a hollow inner chamber is arranged at the pipe body part, and an opening is formed at the pointed end of the inner chamber; a joint is arranged at the tail part, and the piezometer tube is connected with the micro catheter through the joint; and the piezometer tube is also connected with the pressure transducer connected with the display device. With the micro catheter, the device can detect the vascular pressure directly, the immediate effect that the bracket is placed in a coronary artery and the aspect that the bracket is guided to be placed optimally are equivalent to those of the pressure guide wires; moreover, the utility model has the characteristics of simple operation without repeated replacement of the catheter, time saving, low price and safety.
Description
Technical field
This utility model relates to a kind of blood vessel pressure tester, particularly relates to a kind of checkout gear that utilizes the myocardium part blood flow reserve of microguide.
Background technology
Coronarography is the goldstandard of diagnosis heart disease, based on the coronary angioplasty and the Stent of coronary angiography, is the important means of treatment coronary heart disease.
Traditionally, owing to be subjected to blood flow and piezometry technology limitation in the arteria coronaria, get involved the doctor adopts morphological method to judge degree of stenosis more, but this method can't be carried out functional evaluation to pathological changes, and because the defective of coronarography emission image technology, the degree of stenosis that is reflected can not actually reflect the result that postmortem anatomic measurement or IVUS detect.
By the pressure seal wire measure and the calculating myocardium part blood flow reserve (myocardialfractional flow reserve FFRmyo) is the method that the detection arteria coronaria pathological changes physiology a kind of commonly used of developed recently changes.FFRmyo reflects narrow hemodynamics meaning own very specifically, by measuring FFRmyo, can more accurate understanding coronary stricture to the influence degree of myocardial flow, provide reliable foundation to judging whether borderline lesion needs to intervene, simultaneously, can also be used for support and insert therapeutic evaluation afterwards, can reflect the function order of severity that pathological changes is narrow exactly by FFRmyo, help the doctor select more objectively interventional therapy indication, instruct support optimization to insert and judge therapeutic effect and late result.These all gain public acceptance, also have recently and deliver at the randomized controlled trial of FFRmyo specially.Clinically, what application FFRmyo was maximum is that coronary angiography turns out to be the critical stenosis pathological changes, if FFRmyo＜0.75 proves the narrow hematodinamics meaning that has, answers placing rack or row coronary bypass surgery.So the pressure seal wire selects that for the treatment of edge pathological changes certain directive significance is arranged.
FFR is meant the ratio of the far-end blood pressure of the coronary stenosis pathological changes that the pressure seal wire is measured with narrow near-end blood pressure, that is: FFRmyo=Pd/Pa, and wherein, Pd is the far-end blood pressure of the narrow pathological changes of coronary artery, Pa is the near-end blood pressure of the narrow pathological changes of coronary artery.The measurement of the far-end blood pressure of coronary stenosis pathological changes is at present finished by the pressure seal wire.The pressure seal wire is similar to the common seal wire of percutaneous tranluminal coronary angioplasty inch, and the front end of described pressure seal wire is soft head, and the end of this soft head studs with a pressure transducer, and described pressure transducer is positioned at the 3cm place, top of pressure seal wire.The using method of pressure seal wire is: after external zeroing and calibration, after diagnosing or guide wire pressurization pressure seal wire advance people's lesion vessels, make the pressure transducer on it be positioned at the target lesion near-end, this place's guide wire is equated with the pressure of pressure seal wire record, the pressurization pressure seal wire makes its pressure transducer be positioned at the pathological changes far-end by target lesion then, write down the pressure of guide wire and pressure seal wire simultaneously, what the pressure seal wire recorded is the interior pressure of narrow distal vessels, and what guide wire recorded is the interior pressure of narrow nearly distal vessels.
But pressure seal wire of the prior art has following deficiency:
1. Financial cost height.A pressure seal wire price and is disposable use about 10000 yuan, in addition, also needs to be furnished with the pressure display device of expensive special use, and therefore the about 500,000/platform of described display device has increased the input cost of patient's seek medical advice cost and hospital.
2. the real-time pressure value of resulting pressure data of pressure seal wire and indirectly measurement coronary blood flow but value of calculation, thereby can not obtain pressure curve and change.
3. measurement error is big.Because the lesion vessels many places are in tortuous state, so the seal wire in the use is crooked and discounting all can influence certainty of measurement, thereby the build-up of pressure measurement is inaccurate, measurement error is big.
4. complicated operation, the pressure seal wire is difficult for putting in place, needs on the platform under the patient and platform the equipment operator to closely cooperate during measurement and cooperates, and has increased working strength.
Summary of the invention
The purpose of this utility model provides that a kind of cost is low, the real-time pressure value that can directly measure coronary blood flow and can obtain the checkout gear of that pressure curve changes, certainty of measurement height, easy and simple to handle, the myocardium part blood flow reserve that utilizes microguide that can reduce working strength according to described force value.
For solving the problems of the technologies described above, this utility model is taked following technical scheme: a kind of checkout gear that utilizes the myocardium part blood flow reserve of microguide is characterized in that: comprise microguide, external pressure-measuring pipe, external pressure transducer and display device; Described microguide has tube body, and described tube body has tip and tail end; Be provided with the inner chamber of hollow in the described tube body, described inner chamber forms opening at described most advanced and sophisticated place; Described afterbody place is provided with joint, and described pressure-measuring pipe is connected with microguide by described joint; Described pressure-measuring pipe is connected with pressure transducer, and pressure transducer is connected with display device.
Further, the diameter of described microguide is 1.8F-3F.
Further, the diameter of described microguide is 2F.
Further, described display device is a computer.
The checkout gear of the myocardium part blood flow reserve that utilizes microguide in this utility model is owing to adopted microguide, thereby can directly record vascular pressure, estimating immediate effect that intracoronary stent inserts, instructing support optimization suitable with pressure seal wire effect aspect inserting, operation more simply, does not need repeatedly exchanging pipe, saves time, inexpensive, safe characteristics but have.
Description of drawings
Fig. 1 is the structure chart of the checkout gear of the myocardium part blood flow reserve that utilizes microguide in this utility model.
Fig. 2 utilizes the checkout gear of myocardium part blood flow reserve of microguide and the measurement effect comparison diagram of pressure seal wire.
The specific embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated.
Fig. 1 shows the structural representation of the checkout gear of the myocardium part blood flow reserve that utilizes microguide in this utility model.As shown in Figure 1, the described checkout gear in this utility model comprises microguide 7, external pressure-measuring pipe 4, external pressure transducer 5 and display device 6.
Described microguide 7 is flexible flexible conduit, and its diameter is less than 3F; Described microguide 7 has tube body 1, and described microtubule body 1 has tip 8 and tail end 9; Be provided with the inner chamber 2 of hollow in the described tube body 1, described inner chamber 2 forms opening at described most advanced and sophisticated 8 places; Described afterbody 9 places are provided with the joint 3 that is connected with described pressure-measuring pipe 4; Described microguide 1 can be adopted as poly-alkene material usually and make, and preferably, it typically has a diameter from about 1.8F-3F.
Described pressure-measuring pipe 4 is connected with pressure transducer 5, and pressure transducer 5 is connected with display device 6.
Described display device 6 is used to read and calculate the measured force value of described pressure transducer 5, it comprise with described pressure transducer 5 between carry out the digital signal acquiring portion that vascular pressure signal transition that the communication section of digital communication maybe can collect pressure transducer mount 5 becomes digital signal, described communication section can directly obtain digitized vascular pressure signal from described pressure transducer 5; In addition, described display device 6 also comprises calculating part, pressure correction portion and pressure display part, described calculating part is the vascular pressure value according to the vascular pressure data reduction that obtains from described pressure transducer 5, described pressure is repaiied described vascular pressure value is revised to obtain more accurate vascular pressure value, described pressure display part with the form of described vascular pressure value by curve in real time, dynamically show through revising, thereby reflect the variation of vascular pressure.Preferably, described calculating display device 6 adopts personal computer to realize.Preferably, described display device 6 also includes control part, and described control part is used to control described communication section or whether digital control signal collection portion carries out work.
The using method of the checkout gear of the myocardium part blood flow reserve that utilizes microguide in this utility model is described below.
Conventional percutaneous puncture, place coronary angiography or guiding catheter, when needs are measured the arteria coronaria internal pressure, behind the inner chamber 2 and pressure-measuring pipe 4 abundant aerofluxuss with microguide, with described 2 and pressure-measuring pipe 4 in be full of the anticoagulant normal saline, again the microguide body is sent in the human body arteria coronaria blood vessel by the sheath pipe; Then, the afterbody of microguide is connected with described pressure-measuring pipe 4 by joint 3, wherein, described pressure-measuring pipe 4 is connected with pressure transducer 5, and pressure transducer 5 is connected with display device 6.
After described microguide is sent into human lesion arteria coronaria blood vessel, described opening by its tip communicates with blood flow in the arteria coronaria, the inner chamber 2 of blood flow by the described normal saline that has been full of of microguide is with described airtight and have the pressure-measuring pipe 4 of normal saline directly to be connected in this moment arteria coronaria, thereby the vascular pressure in the described arteria coronaria can be by described pressure transducer 5 sensings, thereby show in described display device 6.Further, when the microguide tip arrived the near-end of vascular lesion, described display device 6 just began to carry out the vascular pressure monitoring.
The present invention compares with adopting pressure seal wire measurement FFR, and have the following advantages: the blood flow of (1) lesion vessels is by microguide, and pressure-measuring pipe directly links to each other with pressure transducer, directly measures blood stream pressure, and accurately and reliably, the influence factor is few; (2) low price, the about 2000 yuan/root of microguide is equivalent to 1/5 of pressure seal wire, has reduced patient's cost of seeking medical advice; (3) simplify operation technique.Do not comprise seal wire owing to have among the present invention, so avoided the operation of exchange guidewire repeatedly; (4) this pressure measuring system can be monitored the lesion vessels internal pressure in real time in art, be convenient to the patient timely situation in the solving skill; (5) do not need additional in addition special equipment.Above-mentioned pressure-measuring pipe and pressure transducer are conduit room's common equipment, do not need additionally to acquire any equipment, are convenient to promote under the situation that does not increase hospital's input carry out this pressure measuring system; (6) kept the delivery functions of microguide, be particularly suitable for arteria coronaria pressure measxurement and operation technique that the chronic occlusion sexually transmitted disease (STD) becomes, dual-use material reduces medical treatment cost.
Fig. 2 shows the checkout gear of the myocardium part blood flow reserve that utilizes microguide in this utility model and the measurement effect comparison diagram of present UP seal wire.As shown in Figure 2, successively compare with the FFR that microtubular method and pressure seal wire method are measured through routine patient of past 14, visible two kinds of basic zero differences of the resulting FFR of method show the measurement effect that the method can obtain and pressure seal wire effect is identical substantially.In the practice, because the microguide of 2F diameter size is suitable, so can satisfy the measurement requirement of most of arteria coronaria pathological changes.
Among the present invention, microtubular is being estimated immediate effect that intracoronary stent inserts, is being instructed support optimization suitable with pressure seal wire effect aspect inserting, but operate more simple, do not need repeatedly exchanging pipe, save time, inexpensive, safe characteristics, insert immediate effect, instruct support optimization remarkable advantage to be arranged aspect inserting estimating intracoronary stent, be worth in clinical position, applying.
Claims (4)
1. a checkout gear that utilizes the myocardium part blood flow reserve of microguide is characterized in that: comprise microguide, external pressure-measuring pipe, external pressure transducer and display device;
Described microguide has tube body, and described tube body has tip and tail end; Be provided with the inner chamber of hollow in the described tube body, described inner chamber forms opening at described most advanced and sophisticated place;
Described afterbody place is provided with joint, and described pressure-measuring pipe is connected with microguide by described joint;
Described pressure-measuring pipe is connected with pressure transducer, and pressure transducer is connected with display device.
2. the checkout gear that utilizes the myocardium part blood flow reserve of microguide as claimed in claim 1 is characterized in that: the diameter of described microguide is 1.8F-3F.
3. the checkout gear that utilizes the myocardium part blood flow reserve of microguide as claimed in claim 2 is characterized in that: the diameter of described microguide is 2F.
4. as each described checkout gear that utilizes the myocardium part blood flow reserve of microguide of claim 1-3, it is characterized in that: described display device is a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202238191U CN201691912U (en) | 2010-06-10 | 2010-06-10 | Device for detecting myocardial fractional flow reserve through micro catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202238191U CN201691912U (en) | 2010-06-10 | 2010-06-10 | Device for detecting myocardial fractional flow reserve through micro catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201691912U true CN201691912U (en) | 2011-01-05 |
Family
ID=43393151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202238191U Expired - Fee Related CN201691912U (en) | 2010-06-10 | 2010-06-10 | Device for detecting myocardial fractional flow reserve through micro catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201691912U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869472A (en) * | 2010-06-10 | 2010-10-27 | 杭州市第一人民医院 | Detection device using cardiac muscle part blood flow reserve of miniature catheter |
-
2010
- 2010-06-10 CN CN2010202238191U patent/CN201691912U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869472A (en) * | 2010-06-10 | 2010-10-27 | 杭州市第一人民医院 | Detection device using cardiac muscle part blood flow reserve of miniature catheter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11950884B2 (en) | Devices, systems, and methods for assessing a vessel | |
| JP7196273B2 (en) | Systems and methods for assessing the cardiac system by determining the minimum distal pressure/arterial pressure (PD/PA) ratio | |
| US9931041B2 (en) | Method and apparatus for fractional flow reserve measurements | |
| EP3021741B1 (en) | System for assessing a vessel with automated drift correction | |
| US20190110776A1 (en) | Methods for Computing Coronary Physiology Indexes Using a High Precision Registration Model | |
| US6471656B1 (en) | Method and system for pressure based measurements of CFR and additional clinical hemodynamic parameters | |
| US10888232B2 (en) | Devices, systems, and methods for assessing a vessel | |
| US10076301B2 (en) | Devices, systems, and methods for assessment of vessels | |
| US11672434B2 (en) | Devices, systems, and methods for assessment of vessels | |
| EP3058868A1 (en) | Cardiovascular analyzer | |
| JP2021517034A (en) | Determination and visualization of anatomical markers for intraluminal lesion assessment and treatment planning | |
| EP3057495B1 (en) | System for assessing a stenosis in a blood vessel with optimized proximal and distal pressure measurements | |
| EP2306896B1 (en) | Non-invasive systems for assessing cardiac filling pressure | |
| JP7118464B2 (en) | Method and apparatus for acquiring vascular pressure difference | |
| US20140276137A1 (en) | Systems and methods for determining coronary flow reserve | |
| JP2016515875A (en) | Interface device, system, and method for use with an intravascular pressure monitoring device | |
| CN114302673A (en) | Pressure-based structural cardiac assessment system and method | |
| WO2001021057A2 (en) | A method and system for determination of ffr based on flow rate measurements | |
| US20220395333A1 (en) | Co-registration of intravascular data and multi-segment vasculature, and associated devices, systems, and methods | |
| WO2016008809A1 (en) | Devices, systems, and methods and associated display screens for assessment of vessels with multiple sensing components | |
| CN201691912U (en) | Device for detecting myocardial fractional flow reserve through micro catheter | |
| CN212365043U (en) | Data processing system based on blood vessel image | |
| EP1079727A1 (en) | Apparatus and method for identification and characterization of lesions and therapeutic success by flow disturbances analysis | |
| CN101869472A (en) | Detection device using cardiac muscle part blood flow reserve of miniature catheter | |
| CN111344799A (en) | Automatic standardization of in-line devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20140610 |