CN106770282B - Hemodialysis extracorporeal circulation blood coagulation classifier and blood coagulation classification method using same - Google Patents
Hemodialysis extracorporeal circulation blood coagulation classifier and blood coagulation classification method using same Download PDFInfo
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Abstract
The invention provides a hemodialysis extracorporeal circulation blood coagulation classifier, which comprises: the detection box is used for sealing a dropper or a dialyzer of the extracorporeal circulation pipeline; the flushing device is arranged beside the detection box, a liquid outlet pipe of the flushing device penetrates through the end part of the detection box and is communicated to a dropper or a dialyzer of the extracorporeal circulation pipeline, and physiological saline is stored in the flushing device; the fixing device is connected with the detection box and the flushing device; the detection unit comprises an infrared emission structure and an outer red line receiving structure, the infrared emission structure and the outer red line receiving structure are both arranged on the inner side wall of the detection box, and the infrared emission structure and the outer red line receiving structure are arranged oppositely; the infrared transmitting structure and the external red line receiving structure are connected with the controller; and the alarm is connected with the controller. The invention has the beneficial effects that: the automatic grading of the blood coagulation of the blood in the dialyzer and the extracorporeal circulation line is realized.
Description
Technical Field
The invention relates to a hemodialysis device, in particular to a hemodialysis extracorporeal circulation blood coagulation classifier and a blood coagulation classification method using the same.
Background
With the increase of the number of people in hemodialysis, the demand on the dialyzer can be greatly increased, and simultaneously, higher requirements can be also met on the dialysis effect. Dialyzer coagulation is a common emergency in hemodialysis, which needs to be treated urgently, otherwise serious consequences can be caused, and the reasons for generating dialyzer coagulation are as follows: insufficient blood flow, insufficient anticoagulant dosage, high coagulation state, insufficient heparin-free dialysis preflushing circulation, insufficient arterial puncture needle bleeding, vein needle blockage, reverse-folding phenomenon of pipelines, frequent alarm of a machine, blood pump stalling, air entering a dialyzer, low ambient temperature and the like. The clotting of the dialyzer is manifested by dark and dark color of the dialyzer, a significant increase in venous pressure, a hard venous pot, a dark color, a "clickly" friction sound from the machine, etc. In the prior art, in order to check the occurrence of blood coagulation phenomenon in time and treat the blood coagulation phenomenon to prevent the life of a patient from being threatened, whether the blood coagulation is serious or not is generally determined by artificially observing the blood coagulation performance, but the prior art has the following defects: because the artificial observation is influenced by subjective factors of people, the phenomenon of untimely examination can occur, and the threat to the life of a patient and the like is brought; in addition, if the blood coagulation is judged to be serious artificially, the judgment standards of each person are different, the phenomena of judging the blood coagulation not to be serious as the blood coagulation is serious, judging the blood coagulation to be serious as the blood coagulation is not serious, and the like occur, and the judgment is not accurate, so the reliability is not high. In summary, the invention provides a hemodialysis extracorporeal circulation blood coagulation classifier, which is a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a hemodialysis extracorporeal circulation blood coagulation classifier and a blood coagulation classification method using the same, and solves the problem that the interference of external light on laser detection cannot be prevented because the classification is judged without using laser in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention firstly provides a hemodialysis extracorporeal circulation blood coagulation classifier, which comprises:
the detection box is used for sealing a dropper or a dialyzer of the extracorporeal circulation pipeline;
the flushing device is arranged beside the detection box, a liquid outlet pipe of the flushing device penetrates through the end part of the detection box and is communicated to a dropper or a dialyzer of the extracorporeal circulation pipeline, and physiological saline is stored in the flushing device so as to flush 100ml of physiological saline into the dropper or the dialyzer of the extracorporeal circulation pipeline during each blood coagulation grading;
a fixing device connected with the detection box and the flushing device to fix the detection box and the flushing device;
the detection unit comprises an infrared emission structure and an external red line receiving structure, the infrared emission structure and the external red line receiving structure are both arranged on the inner side wall of the detection box and are arranged opposite to each other, and the infrared emission structure can scan a dropper or a dialyzer of the whole extracorporeal circulation pipeline to obtain an infrared image of the dropper or the dialyzer of the whole extracorporeal circulation pipeline;
the controller is connected with the infrared transmitting structure and the outer red line receiving structure to control the opening of the infrared transmitting structure and the outer red line receiving structure, receive the infrared image, judge whether the gray value of each point is greater than a preset value, obtain the total point number by counting the points of which the gray value is greater than the preset value, calculate the resolution ratio of the total point number/the infrared image as the actual blood coagulation area and the actual blood coagulation area/cross-sectional area as the blood coagulation proportion, compare the blood coagulation proportion with 1/4 and 1/2 to realize blood coagulation grading and blood coagulation judgment, and send a starting alarm signal when the blood coagulation is judged; and
and the alarm is connected with the controller to give an alarm that the blood coagulation is finished when the controller gives an activation alarm signal.
In order to facilitate the user's observation of the coagulation status, it is preferable to further include a display connected to the controller to display the coagulation staging status.
In order to design a simple-structured, easy-to-use, low-cost and energy-saving flushing device, it is preferable that the flushing device comprises:
a liquid storage tank for storing physiological saline;
one end of the liquid outlet pipe is communicated with the liquid storage tank, and the other end of the liquid outlet pipe is communicated with a dropper or a dialyzer of the extracorporeal circulation pipeline;
the top surface of the metering valve is lower than the bottom surface of the liquid storage box, and the bottom surface of the metering valve is higher than the top surface of a dropper or a dialyzer of the extracorporeal circulation pipeline;
wherein the fixing device is connected with the liquid storage tank and the metering valve.
In order to design a fixing device having a simple structure to meet the use of different models of hemodialysis machines, it is preferable that the fixing device includes:
the first mounting plate is connected with the detection box;
the second mounting plate is connected with the liquid storage tank;
the fixing plate is fixed on the hemodialysis machine box body through a first screw;
the first mounting plates are connected with the fixed plate through the first connecting plates, and two adjacent first connecting plates are fixed through second screws;
the second mounting plates are connected with the fixing plate through the second connecting plates, and two adjacent second connecting plates are fixed through third screws.
In order to facilitate the detection when the controller stops operating, it is preferable that a clamping groove is formed in the outer surface of the detection box, and a non-coagulation comparison card, a primary coagulation comparison card, a secondary coagulation comparison card and a tertiary coagulation comparison card are arranged in the clamping groove.
Meanwhile, the invention also provides a blood coagulation grading method using the hemodialysis extracorporeal circulation blood coagulation grader, which is characterized by comprising the following steps of:
step one, sleeving a detection box on a dropper or a dialyzer of an extracorporeal circulation pipeline;
fixing the detection box and the flushing device with the hemodialysis machine box body by using a fixing device;
step three, flushing 100ml of physiological saline into a dropper or a dialyzer of the extracorporeal circulation pipeline by using a flushing device;
step four, after 100ml of physiological saline is filled for 1 minute, an infrared ray transmitting structure and an external red line receiving structure are used for acquiring an infrared image of a dropper or a dialyzer of the whole extracorporeal circulation pipeline;
step five, the controller obtains the infrared image and judges whether the gray value of each point is greater than a preset gray value;
step six, the controller sums up the points with the gray value larger than the preset value to obtain the total points;
step seven, the controller is controlled by a formula: the resolution ratio of the total point number/the infrared image is equal to the actual blood coagulation area, and then the actual blood coagulation area is obtained;
step eight, grading treatment: presetting the section area of a dropper or a dialyzer of an extracorporeal circulation pipeline, and according to a formula: obtaining the blood coagulation ratio by the actual blood coagulation area/section area which is the blood coagulation ratio;
and step nine, carrying out blood coagulation grading and blood coagulation judgment: comparing the blood coagulation ratio with 1/4 and 1/2, judging the blood coagulation ratio to be primary blood coagulation if the blood coagulation ratio is smaller than 1/4, judging the blood coagulation ratio to be secondary blood coagulation if the blood coagulation ratio is between 1/4 and 1/2, and judging the blood coagulation ratio to be tertiary blood coagulation if the blood coagulation ratio is larger than 1/2; meanwhile, when the secondary coagulation or the tertiary coagulation is judged, the coagulation is judged, and the step nine is executed;
step ten, the controller controls the alarm to be started, and the alarm sends out.
Compared with the prior art, the invention has the following beneficial effects:
1) by arranging the detection box, a foundation is provided for the installation of the detection unit, the controller and the alarm, and meanwhile, a sealed space is provided for the detection of the detection unit, so that the influence of an external light-emitting source on the detection is prevented;
2) by arranging the flushing device, the normal saline is provided, the standard 100ml normal saline can be provided, and the detection precision of the subsequent coagulation phenomenon is improved;
3) the infrared image is obtained by arranging the infrared transmitting structure and the external red line receiving structure;
4) through setting up the controller, utilize the blood coagulation insoluble in normal saline, normal blood's transmittance is better, and the blood coagulation can not the printing opacity keep away from, and through infrared irradiation back, the light through the blood coagulation is darker to outer red line receiving structure receipt, and the light of received process normal blood is bright, and the corresponding condition that shows on infrared image is: the gray value of the blood coagulation part is larger, the gray value of the normal blood part is smaller, whether the image point belongs to the blood coagulation or the normal blood can be judged through the judgment of the gray value, the area (namely: 1/resolution in inch) corresponding to each point can be calculated through the resolution of the infrared image, the actual blood coagulation area is obtained through the multiplication of the total number of the blood coagulation points and the area corresponding to each point, and then the blood grading and the blood coagulation judgment are realized;
5) through the setting of alarm, send when judging for the blood coagulation and already blood coagulation and propose to the user does emergency treatment, provides the guarantee for patient's safety.
Drawings
FIG. 1 is a sectional view of the detection chamber of the hemodialyzer-extracorporeal circulation coagulation classifier of the present embodiment;
FIG. 2 is a block diagram of the circuit of the hemodialysis extracorporeal circulation coagulation classifier of the present embodiment;
FIG. 3 is a schematic diagram of a blood coagulation-free contrast card, a primary blood coagulation contrast card, a secondary blood coagulation contrast card and a tertiary blood coagulation contrast card for manually detecting a dropper of an external circulation line;
FIG. 4 is a schematic diagram of a blood coagulation-free contrast card, a primary blood coagulation contrast card, a secondary blood coagulation contrast card and a tertiary blood coagulation contrast card for automatically detecting a dropper of an external circulation line.
Detailed Description
As shown in fig. 1 and fig. 2, the present embodiment first proposes a hemodialysis extracorporeal circulation coagulation classifier, which includes:
the detection box 1 is used for sealing a dropper or a dialyzer of an extracorporeal circulation pipeline;
the flushing device 2 is arranged beside the detection box 1, a liquid outlet pipe of the flushing device 2 penetrates through the end part of the detection box 1 and is communicated to a dropper or a dialyzer 7 of the extracorporeal circulation pipeline, and physiological saline is stored in the flushing device 2 so as to flush 100ml of physiological saline into the dropper or the dialyzer 7 of the extracorporeal circulation pipeline during each blood coagulation grading;
a fixing device 3 connected with the detection box 1 and the washing device 2 to fix the detection box 1 and the washing device 2;
the detection unit 4 comprises an infrared emission structure 41 and an external red line receiving structure 42, the infrared emission structure 41 and the external red line receiving structure 42 are both arranged on the inner side wall of the detection box 1, the infrared emission structure 41 and the external red line receiving structure 42 are arranged oppositely, and the infrared emission structure 41 can scan a dropper or a dialyzer 7 of the whole extracorporeal circulation pipeline to obtain an infrared image of the dropper or the dialyzer 7 of the whole extracorporeal circulation pipeline;
the controller 5 is connected with the infrared transmitting structure 41 and the external red line receiving structure 42, so as to control the infrared transmitting structure 41 and the external red line receiving structure 42 to be started, receive the infrared image, judge whether the gray value of each point is greater than a preset value, obtain the total points by counting the points of which the gray value is greater than the preset value, calculate the resolution ratio of the total points/the infrared image as the actual blood coagulation area, and calculate the actual blood coagulation area/cross-sectional area as the blood coagulation proportion (wherein, the cross-sectional area is the cross-sectional area of the inner cavity of the extracorporeal circulation pipeline after the dropper or the dialyzer 7 is cut along the diameter), compare the blood coagulation proportion with 1/4 and 1/2, realize blood coagulation grading and blood coagulation judgment, and send a starting alarm signal when the blood coagulation is judged; and
and an alarm 6 connected to the controller 5 to give an alarm of coagulation having occurred when the controller 5 gives an activation alarm signal.
In order to facilitate the observation of the coagulation status by the user, a display 8 is also included in connection with the controller 5 to show the coagulation staging status.
In order to design the washing device 2 with simple structure, convenient use, low cost and energy saving, it is preferable that the washing device 2 comprises:
a liquid storage tank 21 for storing physiological saline;
a liquid outlet pipe 22, one end of which is communicated with the liquid storage tank 21 and the other end of which is communicated with a dropper of the extracorporeal circulation pipeline or the dialyzer 7;
the metering valve 23 is arranged on the liquid outlet pipe 22, the top surface of the metering valve 23 is lower than the bottom surface of the liquid storage tank 21, and the bottom surface of the metering valve 23 is higher than the top surface of a dropper of the extracorporeal circulation pipeline or the dialyzer 7;
wherein the fixing device 3 is connected to the reservoir 21 and the metering valve 23. The method comprises the following steps that firstly, a metering valve 23 is started, the metering valve 23 opens a passage with a liquid storage tank 21, and as the top surface of the metering valve 23 is lower than the bottom surface of the liquid storage tank 21, physiological saline can automatically flow into a metering chamber by utilizing the siphon phenomenon; then, when the amount of the physiological saline in the metering chamber reaches 100ml, the metering valve 23 opens a passage with a dropper of the extracorporeal circulation line or the dialyzer 7; finally, because the bottom surface of the metering valve 23 is higher than the top surface of the dropper of the extracorporeal circulation pipeline or the dialyzer 7, the normal saline automatically flows into the dropper of the extracorporeal circulation pipeline or the dialyzer 7 by utilizing the siphon phenomenon, and the 0.9 percent NS100ml flushing of the dialyzer and the extracorporeal circulation pipeline is realized, so that the coagulation condition can be detected subsequently.
In order to design the fixing device 3 with a simple structure to meet the use requirements of different models of hemodialysis machines, it is preferable that the fixing device 3 comprises:
a first mounting plate 31 connected to the detection box 1;
a second mounting plate 32 connected to the liquid storage tank 21;
a fixing plate 33 fixed to the hemodialysis machine case by a first screw 36;
the first mounting plates 31 are connected with the fixed plate 33 through the first connecting plates 34, and two adjacent first connecting plates 34 are fixed through second screws 37;
the second mounting plates 32 are connected with the fixing plate 33 through the second connecting plates 35, and two adjacent second connecting plates 35 are fixed through third screws 38. By using the number of the first connecting plates 34 and the second connecting plates 35, the use of different types of hemodialysis machines can be adapted, because the distances between the box body and the dropper of the external circulation pipeline or the dialyzer 7 are different in different types of hemodialysis machines.
In order to facilitate detection when the controller stops operating, a card slot 18 is arranged on the outer surface of the detection box 1, a blood coagulation free comparison card 181, a primary blood coagulation comparison card 182, a secondary blood coagulation comparison card 183 and a tertiary blood coagulation comparison card 184 are arranged in the card slot 18, and the blood coagulation free comparison card 181, the primary blood coagulation comparison card 182, the secondary blood coagulation comparison card 183 and the tertiary blood coagulation comparison card 184 are respectively shown in fig. 3 or fig. 4. When the controller stops operating, if the burette of the external circulation pipeline is used, the non-coagulation comparison card 181, the first-stage coagulation comparison card 182, the second-stage coagulation comparison card 183 and the third-stage coagulation comparison card 184 shown in fig. 3 are used to compare the burette of the external circulation pipeline with the non-coagulation comparison card 181, the first-stage coagulation comparison card 182, the second-stage coagulation comparison card 183 and the third-stage coagulation comparison card 184, so as to classify the coagulation condition as: primary coagulation, secondary coagulation, tertiary coagulation; in the case of a dialyzer, the non-coagulation contrast card 181, the first-stage coagulation contrast card 182, the second-stage coagulation contrast card 183, and the third-stage coagulation contrast card 184 shown in fig. 4 are used to compare the dialyzer with the non-coagulation contrast card 181, the first-stage coagulation contrast card 182, the second-stage coagulation contrast card 183, and the third-stage coagulation contrast card 184, so as to classify the coagulation condition as: primary coagulation, secondary coagulation, tertiary coagulation.
Meanwhile, the embodiment also provides a blood coagulation grading method using the hemodialysis extracorporeal circulation blood coagulation grader, which comprises the following steps:
step one, sleeving a detection box 1 on a dropper or a dialyzer 7 of an extracorporeal circulation pipeline;
fixing the detection box 1 and the flushing device 2 with the hemodialysis machine box body by using a fixing device 3;
step three, flushing 100ml of physiological saline into a dropper or a dialyzer 7 of the extracorporeal circulation pipeline by using the flushing device 2;
step four, after 100ml of physiological saline is filled for 1 minute, an infrared emission structure 41 and an external red line receiving structure 42 are used for obtaining an infrared image of a dropper or a dialyzer 7 of the whole extracorporeal circulation pipeline;
step five, the controller 5 obtains the infrared image and judges whether the gray value of each point is greater than a preset gray value;
sixthly, the controller 5 sums up the points with the gray value larger than the preset value to obtain the total points;
step seven, the controller 5 uses the formula: the resolution ratio of the total point number/the infrared image is equal to the actual blood coagulation area, and then the actual blood coagulation area is obtained;
step eight, grading treatment: the sectional area of a dropper of an extracorporeal circulation pipeline or a dialyzer 7 is preset, and the section area is determined by the formula: obtaining the blood coagulation ratio by the actual blood coagulation area/section area which is the blood coagulation ratio;
and step nine, carrying out blood coagulation grading and blood coagulation judgment: comparing the blood coagulation ratio with 1/4 and 1/2, judging the blood coagulation ratio to be primary blood coagulation if the blood coagulation ratio is smaller than 1/4, judging the blood coagulation ratio to be secondary blood coagulation if the blood coagulation ratio is between 1/4 and 1/2, and judging the blood coagulation ratio to be tertiary blood coagulation if the blood coagulation ratio is larger than 1/2; meanwhile, when the secondary coagulation or the tertiary coagulation is judged, the coagulation is judged, and the step nine is executed;
step ten, the controller 5 controls the alarm to be started, and the alarm sends out.
The working principle of the embodiment is as follows:
step one, sleeving a detection box 1 on a dropper or a dialyzer 7 of an extracorporeal circulation pipeline, wherein the detection box 1 is formed by buckling a first half shell and a second half shell, one side of the first half shell is hinged with one side of the second half shell, the other opposite side of the first half shell is buckled with the other opposite side of the second half shell, two ends of the detection box 1 can pass through the dropper or the dialyzer 7 of the extracorporeal circulation pipeline, and when the detection box is sleeved, the buckles are opened, the first half shell and the second half shell are covered, and then the buckles are buckled, so that the detection box 1 can be sleeved on the dropper or the dialyzer 7 of the extracorporeal circulation pipeline;
fixing the detection box 1 and the flushing device 2 with the hemodialysis machine box body by using the fixing device 3, and firstly drilling screw holes matched with the first screws 36 on the hemodialysis machine box body; then, the fixing plate 33 is fixed to the hemodialysis machine case by the first screw 36; finally, the first and second mounting plates 31, 32 are fixed using the required number of first and second connection plates 34, 35, thus fixing the washing device 2 and the test chamber 1;
step three, flushing 100ml of physiological saline into a dropper or a dialyzer 7 of the extracorporeal circulation pipeline by using the flushing device 2;
step four, after 100ml of physiological saline is filled for 1 minute, an infrared image of a dropper or a dialyzer 7 of the whole extracorporeal circulation pipeline is obtained by using the infrared emission structure 41 and the external red line receiving structure 42, and because the infrared image is not stable when the physiological saline is initially added, the infrared image can be obtained after 100ml of physiological saline is filled for 1 minute;
step five, the controller 5 obtains the infrared image and judges whether the gray value of each point is greater than a preset gray value, and the principle is as follows: utilize the blood coagulation insoluble in normal saline, normal blood's transmittance is better, and the blood coagulation can not the printing opacity keep away from, through infrared irradiation back, the light that receives through the blood coagulation is darker to outer red line receiving structure 42, and the light of received process normal blood is bright, and the corresponding condition that shows on infrared image is: the grey value of the blood coagulation part is larger, and the grey value of the normal blood part is smaller;
sixthly, the controller 5 sums up the points with the gray value larger than the preset value to obtain the total points;
step seven, the controller 5 uses the formula: the resolution of the total number of points/infrared image is equal to the actual blood coagulation area (unit: inch), and then the actual blood coagulation area is obtained;
step eight, grading treatment: the sectional area of a dropper of an extracorporeal circulation pipeline or a dialyzer 7 is preset, and the section area is determined by the formula: obtaining the blood coagulation ratio for subsequent judgment, wherein the actual blood coagulation area/section area is the blood coagulation ratio;
and step nine, carrying out blood coagulation grading and blood coagulation judgment: comparing the blood coagulation ratio with 1/4 and 1/2, judging the blood coagulation ratio to be primary blood coagulation if the blood coagulation ratio is smaller than 1/4, judging the blood coagulation ratio to be secondary blood coagulation if the blood coagulation ratio is between 1/4 and 1/2, and judging the blood coagulation ratio to be tertiary blood coagulation if the blood coagulation ratio is larger than 1/2; meanwhile, when the secondary coagulation or the tertiary coagulation is judged, the coagulation is judged, and the step nine is executed;
step ten, the controller 5 controls the alarm to be started, and the alarm sends out.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (4)
1. A hemodialysis extracorporeal circulation coagulation classifier, comprising:
the detection box is used for sealing a dropper or a dialyzer of the extracorporeal circulation pipeline; the detection item is formed by buckling a first half shell and a second half shell, one side of the first half shell is hinged with one side of the second half shell, and the other opposite side of the first half shell is connected with the other opposite side of the second half shell in a buckling manner;
the flushing device is arranged beside the detection box, a liquid outlet pipe of the flushing device penetrates through the end part of the detection box and is communicated to a dropper or a dialyzer of the extracorporeal circulation pipeline, and physiological saline is stored in the flushing device so as to flush 100ml of physiological saline into the dropper or the dialyzer of the extracorporeal circulation pipeline during each blood coagulation grading;
a fixing device connected with the detection box and the washing device to fix the detection box and the washing device, the fixing device comprising: the first mounting plate is connected with the detection box; the second mounting plate is connected with the liquid storage tank; the fixing plate is fixed on the hemodialysis machine box body through a first screw; the first mounting plates are connected with the fixed plate through the first connecting plates, and two adjacent first connecting plates are fixed through second screws; the second mounting plates are connected with the fixed plate through a plurality of second connecting plates, and two adjacent second connecting plates are fixed through third screws; the detection unit comprises an infrared emission structure and an external red line receiving structure, the infrared emission structure and the external red line receiving structure are both arranged on the inner side wall of the detection box and are arranged opposite to each other, and the infrared emission structure can scan a dropper or a dialyzer of the whole extracorporeal circulation pipeline to obtain an infrared image of the dropper or the dialyzer of the whole extracorporeal circulation pipeline;
the controller is connected with the infrared transmitting structure and the outer red line receiving structure to control the opening of the infrared transmitting structure and the outer red line receiving structure, receive the infrared image, judge whether the gray value of each point is greater than a preset value, obtain the total point number by counting the points of which the gray value is greater than the preset value, calculate the resolution ratio of the total point number/the infrared image as the actual blood coagulation area and the actual blood coagulation area/cross-sectional area as the blood coagulation proportion, compare the blood coagulation proportion with 1/4 and 1/2 to realize blood coagulation grading and blood coagulation judgment, and send a starting alarm signal when the blood coagulation is judged; and
and the alarm is connected with the controller to give an alarm that the blood coagulation is finished when the controller gives an activation alarm signal.
2. The hemodialysis extracorporeal circulation coagulation classifier of claim 1, further comprising a display connected to the controller to display the coagulation classification.
3. The hemodialysis extracorporeal circulation coagulation classifier of claim 1, wherein the flushing device comprises:
a liquid storage tank for storing physiological saline;
one end of the liquid outlet pipe is communicated with the liquid storage tank, and the other end of the liquid outlet pipe is communicated with a dropper or a dialyzer of the extracorporeal circulation pipeline;
the top surface of the metering valve is lower than the bottom surface of the liquid storage box, and the bottom surface of the metering valve is higher than the top surface of a dropper or a dialyzer of the extracorporeal circulation pipeline;
wherein the fixing device is connected with the liquid storage tank and the metering valve.
4. The apparatus according to any one of claims 1 to 3, wherein the detection box has a slot on its outer surface, and the slot has a blood coagulation-free contrast card, a primary blood coagulation contrast card, a secondary blood coagulation contrast card and a tertiary blood coagulation contrast card.
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| ES2312290B1 (en) * | 2008-05-14 | 2009-09-22 | Grifols, S.A. | MICROTUBE READING DEVICE FOR BLOOD SAMPLE ANALYSIS. |
| CN203588280U (en) * | 2013-12-13 | 2014-05-07 | 安徽机电职业技术学院 | Finger vein information acquisition apparatus |
| TWM511866U (en) * | 2014-04-25 | 2015-11-11 | Univ Hungkuang | Anticoagulated hemodialyzer |
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2016
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|---|---|---|---|---|
| CN205515802U (en) * | 2016-02-29 | 2016-08-31 | 江苏苏云医疗器材有限公司 | Accurate liquid medicine filter light -resistant device |
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