CN201949502U - Three-way connecting device used for radiography and pressure examination of coronary artery - Google Patents
Three-way connecting device used for radiography and pressure examination of coronary artery Download PDFInfo
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- CN201949502U CN201949502U CN2010202226029U CN201020222602U CN201949502U CN 201949502 U CN201949502 U CN 201949502U CN 2010202226029 U CN2010202226029 U CN 2010202226029U CN 201020222602 U CN201020222602 U CN 201020222602U CN 201949502 U CN201949502 U CN 201949502U
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- main chamber
- pressure
- side pipe
- connecting device
- contrast agent
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Abstract
The utility model relates to a three-way connecting device used for radiography and pressure examination of a coronary artery, comprising a main chamber, one end of the main chamber is connected with a radiography catheter, and the other end is connected with a syringe injecting a contrast agent, a pressure monitoring device, a medicament injecting device, and a complementary contrast agent are also disposed on the main chamber; a pressure energy transducer is connected on the pressure monitoring device, the three-way connecting device is characterized in that, the pressure energy transducer is in a direct and lasting communication with a side tube extending from the main chamber; the cross-sectional area of the side tube is smaller than the cross-sectional area of the main chamber, and is smaller than 1.5 square millimeters. The three-way connecting device in the utility model is advantageous in that, since the cross-sectional area of the side tube is large enough to prevent the contrast agent in the main chamber from shunting from the side tube, radiography effect will not be influenced or repetitive performing-stopping of operation of pressure monitoring will not be required, also, continuous monitoring of pressure in a blood vessel can be performed, thereby facilitating earlier finding of abnormal conditions in operation.
Description
Technical field
This utility model relates to a kind of threeway connecting device, is specifically related to a kind of gaging threeway connecting device of coronarography that is used for.
Background technology
Coronarography is the goldstandard of diagnosis heart disease, is the important means of treatment coronary heart disease based on the coronary angioplasty of coronary angiography and Stent.In the coronarography operation process, the monitoring of intracoronary pressure is most important, and the patient can judge the abnormal conditions that may occur of operation according to the variation of coronary artery arteries and veins internal pressure figure, so that in time take measures, avoid the generation of malpractice.
Present pressure monitoring is realized by a threeway connecting plate.Threeway connecting plate master chamber front end connects angiography catheter, and main cavity rear end connects a syringe that fills contrast agent; Side, threeway connecting plate master chamber has three side openings in the same way, and the front end in a described autonomous chamber of side opening to rear end is respectively pressure monitoring side opening, medicine injection side opening and additional contrast agent side opening.The pressure monitoring side opening is connected with a pressure transducer by a closed conduit that is full of normal saline, after angiography catheter enters human vas, requires the pressure monitoring side opening should keep open state, with real-time monitoring intravascular pressure.When angiography catheter arrived the coronary artery appropriate location and prepares radiography, patient or assistant injected the syringe of main cavity rear end, drive contrast agent and enter angiography catheter by threeway connecting plate master chamber, entered the coronary artery of heart then and made its development.
At present general threeway connecting plate is in the process of using, if do not close the pressure monitoring side opening, to there be the contrast agent of 70%-90% to shunt, thereby have reduced the contrast agent dosage that enters heart arteria coronaria blood vessel, have a strong impact on the radiography effect by the pressure monitoring side opening.In addition, threeway connecting plate of the prior art is provided with a hand switch above its pressure monitoring side opening, except that injecting contrast agent, all need open this switch in all the other times and keep-up pressure the monitoring side opening in open state, carries out pressure monitoring.When injecting contrast agent, need the assistant manually to twist this switch and monitor side opening with closing presure, enter the pressure side opening and influence the radiography effect to prevent the shunting of contrast agent side direction.When treating that contrast agent bolus finishes, need the assistant to twist this switch once more in time, reopen the pressure monitoring side opening, to proceed the monitoring of coronary artery pressure.
In the coronary angiography operation process, the operation of opening/closing presure monitoring switch is very frequent.Simple coronary angiography, generally need close repeatedly for tens times and open the pressure monitoring side opening, if need row coronary angioplasty and Stent, this operation can reach dozens or even hundreds of time, thereby manipulation strength is very big, increased the cooperate difficulty of patient, influenced the continuity of operation, prolonged operating time with the assistant.The more important thing is,, require to finish as early as possible injecting of contrast agent, but loaded down with trivial details to miss the situation on opportunity very common owing to manually operated in the practice for some patient; In addition, if open pressure monitoring does not in time carry out, may miss can be by the unusual sign of the operation of early discovery, and brings risk to patient, even threat to life safety.But in the practice, particularly begin to learn the coronary angiography patient, operate miss open and the closing presure monitoring is often seen, even forgets that open pressure monitoring also happens occasionally.
Present existing threeway connecting plate is except needs repeatedly the switch pressure monitoring side opening, and the another one deficiency is to have the monitoring blind area: when injecting contrast agent, because pressure monitoring is in closed condition, so can't monitor intravascular pressure.
Summary of the invention
This utility model to need manual frequent operation in order overcoming, to cooperate shortcomings such as difficulty is big, operating time length, specification requirement height in the prior art, provide a kind of and can reduce the shunting of pressure monitoring side opening, without manually-operated pressure monitoring side opening switch, can carry out continuously that intracoronary pressure is monitored, unusual sign is performed the operation in early discovery, simple in structure, be easy to produce, the safe gaging threeway connecting device of coronarography that is used for.
For solving the problems of the technologies described above, this utility model is taked following technical scheme:
A kind of gaging threeway connecting device of coronarography that is used for, comprise main chamber, end in described main chamber connects angiography catheter, the other end connects the syringe of injecting contrast agent, also is provided with pressure monitoring device, medicament injection apparatus and additional contrast agent device on described main chamber; Be connected with pressure transducer on described pressure monitoring device, it is characterized in that: described pressure transducer directly, be connected with the side pipe that extends from described main chamber enduringly; The cross-sectional area of described side pipe is less than main chamber cross-sectional area and less than 1.5 square millimeters; Further, the cross-sectional area of described side pipe is between the 0.2-1.2 square millimeter.
Further, on described medicine injection side pipe and/or additional contrast agent side pipe, be respectively arranged with controlled valve.
Further, the cross section of described side pipe is circular, square, ellipse or triangle.
Compared with prior art the utlity model has following tangible advantage:
1, described threeway connecting device is not owing to be provided with switch valve on its pressure monitoring device, thereby can realize omnidistance pressure monitoring and need not very important person's operation, thereby reduced traditional threeway connecting plate owing to the operation risk that the pressure monitoring operation brings, guaranteed patient safety.
2, described threeway connecting device does not change operation technique mode of the prior art, thus simplified patient and assistant operation, reduce the heavy burdens, have good potential applicability in clinical practice.
3, described threeway connecting device has kept the basic structure of original threeway connecting plate, and is simple in structure, be easy to produce.
Description of drawings
Fig. 1 is the structural representation that is used for the gaging threeway connecting device of coronarography in this utility model.
Fig. 2 is after injecting contrast agent by this utility model of different side opening cross-sectional areas, contrast agent shunting and pressure attenuation.
The specific embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated.
As shown in Figure 1, the gaging threeway connecting device of coronarography that is used in this utility model comprises body 2 and the main chamber 4 that is arranged in the described body 2; End in described main chamber 4 is provided with the joint 1, the other end that are used to connect angiography catheter and has the joint 10 that is used to connect the syringe of injecting contrast agent, on described main chamber 4, also be provided with three side pipes abreast, preferably, described side pipe is three the side pipe holes in the same way that are arranged on the sidewall of body, and described three side pipes are followed successively by pressure monitoring side pipe 3, medicine injection side pipe 5 and additional contrast agent side pipe 8 from described joint 1 to joint 10.Be connected with the pressure transducer 7 that is connected with outer conduit on described pressure monitoring side pipe 3, described medicine injection side pipe 5 is connected with cartridge syringe, and described additional contrast agent side pipe 8 is connected with contrast container 11.Preferably, on described medicine injection side pipe 5 and additional contrast agent side pipe 8, be respectively arranged with controlled valve 6 and 9, be respectively applied for control the two opening with close.The diameter of described pressure monitoring side pipe 3 is less than the diameter much smaller than described outer conduit, described diameter is enough little, so that described pressure monitoring side pipe 3 parts can produce enough big resistance, this resistance is enough to prevent that the contrast agent of main intracavity from shunting away from described pressure monitoring side pipe 3, preferably, the cross section of described side pipe is circular, square, oval, triangle or other shape, and its cross-sectional area is less than main chamber cross-sectional area, and less than 1.5 square millimeters; Further, the cross-sectional area of described side pipe is between the 0.2-1.2 square millimeter.
When undergoing surgery operation, angiography catheter enters human heart arteria coronaria blood vessel, enclosed liquid in it links to each other with pressure transducer 7 by interface 1 and pressure monitoring side pipe 3, intravascular pressure is conducted to pressure transducer 7, thereby can record pressure waveform and pressure value in real time.When the needs injection of contrast medium, patient or assistant directly promote described syringe, by main chamber 4 with the contrast agent bolus angiography catheter.Because the diameter of the described pressure monitoring side pipe 3 in this utility model is less than the diameter much smaller than described outer conduit, described diameter is small enough to prevent the size that the contrast agent of main intracavity is shunted away from described pressure monitoring side pipe 3, contrast agent by pressure monitoring side opening open split when therefore injecting is almost nil, thereby can neither influence the also operation of switch pressure monitoring repeatedly of radiography effect.In addition,, therefore avoided the blind area in the observation process, thereby made when injecting contrast agent, can omnidistance free of discontinuities have been monitored by endovascular pressure, found abnormal conditions in the art early thereby be beneficial to owing on the pressure monitoring side pipe 3 switch is not set.
Be the effect of verifying that this novel practical is novel, we have carried out following experiment: the syringe of the tail end by the threeway connecting device in this utility model is injected the 10ml contrast agent, and collect the contrast agent of shunting at pressure monitoring side pipe place, measure its volume by accurate quantification, obtain the contrast agent shunt volume, pressure attenuation when observing simultaneously obtains following test result, sees accompanying drawing 2.
By the test result of Fig. 2 as can be known, when the cross-sectional area of pressure monitoring side pipe 3 was 1.5 square millimeters, the shunt volume maximum reached 4.0ml (i.e. shunting ratio reaches 40%), and this moment, the radiography influential effect was bigger, and the arteria coronaria blood vessel shows insufficient.Along with pressure monitoring side pipe 3 cross sections reduce, shunt volume is also decrescence few, and when the cross-sectional area of pressure monitoring side pipe 3 reduced to 0.8 square millimeter, shunt volume was 3.0ml, and this moment, arteria coronaria blood vessel developing was more abundant.When the cross-sectional area of pressure monitoring side pipe 3 reduced to 0.2 square millimeter, then shunt volume was little of 0.4 milliliter, and do not exert an influence to the radiography effect this moment.Aspect the pressure decay,, there is not the pressure decay when the cross-sectional area of pressure monitoring side pipe 3 during greater than 0.6 square millimeter; When the decay area little during to 0.5 square millimeter, 1% pressure decay can be arranged, when the cross-sectional area of pressure monitoring side pipe 3 reduces to 0.2 square millimeter, the pressure decay only is 1.8%, but the decay of the pressure of this degree does not influence the interpretation to the arteria coronaria internal pressure, so the long-pending scope of the optimal cross-section of pressure monitoring side opening (3) is between the 0.2-1.2 square millimeter.
Claims (5)
1. one kind is used for the gaging threeway connecting device of coronarography, comprise main chamber, end in described main chamber connects angiography catheter, the other end connects the syringe of injecting contrast agent, also is provided with pressure monitoring device, medicament injection apparatus and additional contrast agent device on described main chamber; On described pressure monitoring device, be connected with pressure transducer, it is characterized in that:
Described pressure transducer directly, be connected with the side pipe that extends from described main chamber enduringly; The cross-sectional area of described side pipe is less than main chamber cross-sectional area, and less than 1.5 square millimeters.
2. the gaging threeway connecting device of coronarography that is used for as claimed in claim 1, it is characterized in that: the cross-sectional area of described side pipe is between the 0.2-1.2 square millimeter.
3. as each described gaging threeway connecting device of coronarography that is used for of claim 1-2, it is characterized in that: on described medicine injection side pipe and/or additional contrast agent side pipe, be respectively arranged with controlled valve.
4. the gaging threeway connecting device of coronarography that is used for as claimed in claim 3 is characterized in that: the cross section of described side pipe is circular, square, ellipse or triangle.
5. the gaging threeway connecting device of coronarography that is used for as claimed in claim 1 or 2 is characterized in that: the cross section of described side pipe is circular, square, ellipse or triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202226029U CN201949502U (en) | 2010-06-11 | 2010-06-11 | Three-way connecting device used for radiography and pressure examination of coronary artery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202226029U CN201949502U (en) | 2010-06-11 | 2010-06-11 | Three-way connecting device used for radiography and pressure examination of coronary artery |
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| Publication Number | Publication Date |
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| CN201949502U true CN201949502U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202226029U Expired - Fee Related CN201949502U (en) | 2010-06-11 | 2010-06-11 | Three-way connecting device used for radiography and pressure examination of coronary artery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111166315A (en) * | 2018-11-13 | 2020-05-19 | 苏州润迈德医疗科技有限公司 | Method for calculating instantaneous mode-free ratio and resting state diastolic pressure ratio based on contrast image |
| CN116850433A (en) * | 2023-08-30 | 2023-10-10 | 深圳麦普奇医疗科技有限公司 | Contrast catheter and contrast system |
-
2010
- 2010-06-11 CN CN2010202226029U patent/CN201949502U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111166315A (en) * | 2018-11-13 | 2020-05-19 | 苏州润迈德医疗科技有限公司 | Method for calculating instantaneous mode-free ratio and resting state diastolic pressure ratio based on contrast image |
| WO2020098139A1 (en) * | 2018-11-13 | 2020-05-22 | 苏州润迈德医疗科技有限公司 | Method for calculating instantaneous wave-free ratio and resting diastolic pressure ratio on basis of contrast image |
| CN111166315B (en) * | 2018-11-13 | 2023-03-28 | 苏州润迈德医疗科技有限公司 | Method for calculating instantaneous mode-free ratio and resting state diastolic pressure ratio based on contrast image |
| CN116850433A (en) * | 2023-08-30 | 2023-10-10 | 深圳麦普奇医疗科技有限公司 | Contrast catheter and contrast system |
| CN116850433B (en) * | 2023-08-30 | 2023-11-21 | 深圳麦普奇医疗科技有限公司 | Contrast catheter and contrast system |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20110831 Termination date: 20140611 |