CN109157229B - Continuous arterial blood glucose monitoring equipment and control method thereof - Google Patents
Continuous arterial blood glucose monitoring equipment and control method thereof Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/157—Devices characterised by integrated means for measuring characteristics of blood
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Abstract
The invention discloses continuous arterial blood sugar monitoring equipment and a control method thereof, which belong to the technical field of medical and health instruments and methods, and utilize devices such as a tee joint, a pressure pipe, a blood taking port, an arterial tube and the like of an original arterial pressure measurement monitor, and utilize programs to control a plurality of groups of wires of the continuous arterial blood sugar monitor to conduct actions such as on-off, closing, clamping, rotation and the like of corresponding devices, so that the cutting of anticoagulated saline in the arterial pressure measurement process is sequentially realized, a program-controlled integrated acquisition injector sucks liquid in the arterial tube to realize program-controlled rising of blood level, an electric clamp clamps a small integrated acquisition injector to realize blood acquisition and inspection, and various data are recorded, stored and analyzed through the blood sugar monitor, and simultaneously, the functions such as alarm and the like are realized, thereby greatly reducing the workload of medical staff and improving the accuracy and effect of blood sugar monitoring. The invention has the advantages of exquisite thought, good modularization, strong interference resistance, low cost, easy program control realization, easy function expansion and high blood sugar monitoring precision.
Description
Technical Field
The invention belongs to the technical field of medical and health instruments and methods, and particularly relates to continuous arterial blood glucose monitoring equipment and a control method thereof.
Background
Normal blood glucose levels are necessary for the body to maintain physiological function, however, in critical conditions, patients often experience transient increases in blood glucose due to critical illness, islet dysfunction, called stress hyperglycemia, which is defined as an increase in blood glucose of more than 11.1mmol/L in the case of acute illness. Studies have shown that ICU patients have high incidence of hyperglycemia up to 80%. It is now recognized that stress hyperglycemia may be the greatest risk factor for increased incidence of complications and mortality in ICU patients (cf. McDonnell ME, umpierrez GE. Instrument therapy for the management of hyperglycemia in hospitalized components. Endocrinol Metab Clin North Am.2012Mar;41 (1): 175-201). Therefore, clinical changes (disease severity, nutrition support change, corticosteroid application, etc.) of critical patients need to frequently adjust the dosage of insulin, and the intermittent monitoring of blood glucose at a tip is still the main aspect in clinic, but the intermittent monitoring of blood glucose at a certain time point cannot embody the actual blood glucose control level, and it is more difficult to find asymptomatic hyperglycemia and hypoglycemia, so that blood glucose control cannot be guided well.
In recent years, a continuous dynamic blood glucose monitoring system (CGM) has been developed, which is capable of continuously monitoring blood glucose level in real time by measuring the glucose concentration of interstitial fluid by a subcutaneous glucose oxidase probe to indirectly reflect the blood glucose level, unlike the conventional method. Originally designed for diabetics, although good accuracy has been demonstrated in diabetics, certain aspects of the design are not suitable for critically ill patients, and factors such as tissue edema, hypothermia, hypotension, application of vasoactive drugs and the like which are commonly found in critically ill patients can influence the diffusion of glucose between tissues and blood, thereby affecting the accuracy of the monitoring device. Chinese dynamic blood sugar monitoring clinical application guidelines (refer to Chinese medical society diabetes division, chinese dynamic blood sugar monitoring clinical application guidelines '2012 edition' [ J ]. Chinese diabetes journal, 2012, (10): 582-590.) indicate limitations of evidence-based medical evidence in terms of accuracy and safety, and blood sugar monitoring in Intensive Care Units (ICUs) or operating rooms by adopting real-time CGM technology is not recommended. Related research data (refer to Rijkenberg S, van Steen SC et al Accurcry and reliability of a subcutaneous continuous glucose monitoring device in critically ill components.J Clin Monit Comput.2017 Dec 7.doi:10.1007/S10877-017-0086-z. [ Epub ahead of print ]) show that critical patient random control experiment results show that the accuracy of CGM does not meet the expected standard requirements. Thus, CGM is not suitable for critical patients. The current domestic noninvasive and minimally invasive blood glucose monitoring equipment cannot meet the requirements of high precision and real-time performance (reference: li Hang, infrared noninvasive detection blood glucose meter research [ D ], university of electronic technology and university's university of Shuojun, 2016.) and also cannot meet the requirements of non-long-term detection and high-precision continuous blood glucose monitoring equipment for ICU patients. In 2018, the U.S. medium mentions that Apple bioengineers 'secret team' are building a non-invasive sensor for Apple Watch, which can continuously monitor blood sugar level, the method belongs to non-invasive detection, and the precision, real-time performance and the like of the method are very difficult to meet the special requirements of high real-time performance and high precision of critical patients to a great extent.
The blood sugar monitoring and sampling priority sequence is artery, vein and capillary vessel. For critical patients performing invasive intravascular monitoring, all blood samples should be taken from arteries, arterial blood should not be taken, venous blood samples should be left, capillary blood (needle stick) measurements should be avoided. Capillary blood samples (needle sticks) can be used for patients with relatively light conditions who do not require invasive intravascular monitoring. ICu when critical patient's illness state is in the intensive care unit, have arterial blood pressure monitoring devices, more than radial artery catheterization. Therefore, the blood sugar can be monitored by using the invasive device of radial artery catheterization.
Disclosure of Invention
The invention aims to provide continuous arterial blood glucose monitoring equipment and a control method thereof aiming at the defects existing in the prior art.
The invention adopts the following technical proposal to solve the technical problems
A continuous arterial blood glucose monitoring device comprises a blood glucose meter, an arterial pressure measurement monitor, a wire, an electric switch, an integrated acquisition injector, an electric clamp, a rotary electric bracket and blood glucose test paper;
the blood glucose meter controls the electric switch and the electric clamp to act through the lead, and is used for realizing the integrated collection of the specific position and the specific action of the injector;
the blood glucose meter is used for automatically monitoring blood glucose by rotating the electric bracket and is used for circularly accessing blood glucose test paper, extracting electric signals and updating the blood glucose test paper;
the blood glucose meter is connected with the arterial pressure measurement monitor by a wired or wireless method, and the liquid is conducted and cut off in the infusion pressure tube by an electric switch.
As a further preferred embodiment of the continuous arterial blood glucose monitoring device of the present invention, the blood glucose meter may be manually controlled and programmed and its control variables are embodied by movement means.
As a further preferable scheme of the continuous arterial blood glucose monitoring device, the integrated acquisition injector comprises a rubber capsule, a clamping position cylinder and a hollow metal needle, and is used for realizing needle insertion, injection, suction and instillation of liquid.
As a further preferable scheme of the continuous arterial blood glucose monitoring device, the special position and special action for realizing the integrated acquisition injector are as follows: the glucometer controls the electric clamp through the lead, and realizes a series of circulation operations of clamping, sucking liquid, discharging liquid and discarding the collector of the integrated collecting injector at a specific position.
As a further preferable scheme of the continuous arterial blood glucose monitoring device, the continuous arterial blood glucose monitoring device is used for the cyclic access of blood glucose test paper, the extraction of electric signals and the updating of the blood glucose test paper, and is specifically as follows: the glucometer drives the test paper turntable to rotate by controlling the rotating electric bracket, so that test paper is continuously updated, and meanwhile, the detection effect of blood sugar of the test paper can be transmitted to the glucometer for display through a lead.
A control method based on continuous arterial blood glucose monitoring equipment is characterized by comprising the following steps: the method specifically comprises the following steps:
a: connecting an arterial pressure measurement monitor, a continuous arterial blood glucose meter, various fixing clamps, an electric clamp, an electric switch and the like; setting a blood glucose test period, and starting timing;
b: when the timing period is reached, the arterial pressure measurement monitor is suspended, the timing time of the blood glucose meter is automatically cleared, and the timing is started again;
c: the glucometer controls the action of the electric switch to prevent the anticoagulated saline or physiological saline from flowing downwards;
d: the electric clamp is opened by the control lead of the glucometer, certain liquid is extracted from the pressure tube, and pure fresh blood can be obtained at the blood taking port;
e: the blood glucose meter controls the rotary electric bracket to clamp the integrated collecting injector in the taking area, pierces the integrated collecting injector into a blood taking device of a blood taking port in the blood sucking area to suck blood, controls the rotary electric bracket to rotate to the blood checking area, extrudes the blood sucked by the integrated collecting injector, drops the blood into a test paper blood glucose reaction area of the test paper turntable, and the current after blood glucose reaction is conducted to the blood glucose meter through an electrode area and a lead of the test paper to be displayed, recorded, stored, counted and trend predicted, and is sent to a user for reminding and alarming in a communication mode according to requirements;
d: the blood glucose meter controls the rotary electric support to rotate to the discarding area, discards the integrated collecting injector, and simultaneously controls the rotary electric support to pull out the test paper used before and circulate to a new test paper;
e: the glucometer controls the electric clamp to extrude the large integrated collecting injector through the lead, discharges the liquid in the large integrated collecting injector to the pressure pipe, opens the electric switch to conduct the upper saline and the lower saline, and supplements the saline to the arterial catheterization at a certain speed. The blood glucose meter is suspended and the arterial pressure measurement monitor continues to operate.
f: and before the blood sugar monitoring time, the arterial pressure monitor works normally. And (3) circulating from the step b to the step e until the blood sugar monitoring time, and performing a blood sugar monitoring process.
The volume of the integrated collection syringe is proportional to the amount of collected or injected blood to be achieved, and can be achieved once, the volume of the small integrated collection syringe and the amount of blood actually sucked are directly determined by the blood volume required by the blood glucose test paper, and the volume of the large integrated collection syringe can be set according to the following method:
V＝n*L*π*r*r，
wherein r is the radius of the inner tube of the pressure tube; pi is the circumference ratio; l is the distance from the arterial catheterization to the blood taking port; n is a length coefficient, and is generally 1.5; v is the volume of liquid that the integrated collection syringe needs to draw from within the pressure tube.
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
the method utilizes devices such as a tee joint, a pressure pipe, a blood taking port, an arterial catheter and the like of the original arterial pressure measurement monitor, and utilizes a program to control a plurality of groups of wires of the continuous arterial blood glucose meter to carry out actions such as on-off, closing, clamping, rotation and the like of the corresponding devices, so that the cutting-off of anticoagulated saline or physiological saline in the arterial pressure measurement process is sequentially realized, a program-controlled integrated acquisition injector sucks liquid in the arterial catheter to realize program-controlled rising of the blood level, and an electric clamp clamps a small-sized integrated acquisition injector to realize blood acquisition, examination, recording, analysis, storage and the like;
the invention not only can continuously and periodically dynamically monitor the blood glucose value of a patient, but also can perform various additional functions such as automatic recording, alarming and the like; meanwhile, the workload of medical staff can be greatly reduced, the medical efficiency and the working efficiency of the medical staff (especially facing serious patient conditions such as emergency treatment or ICU ward) can be improved, and the medical staff can better play a role in the required field;
the invention has the advantages of exquisite thought, good modularization, strong interference resistance, low cost, easy program control realization and good popularization and utilization potential;
the invention provides an automatic device for continuous arterial blood sugar measurement of clinical critical patients, which can monitor dynamic change of arterial blood sugar of the patients, adjust corresponding parameters according to the needs of illness state in a certain time, set alarm lines and provide accurate basis for clinical decision of doctors. Meanwhile, based on the dynamic change graph of arterial blood sugar, the hypoglycemia and hyperglycemia can be found in time, and intervention can be given in time. In addition, the blood sugar can be repeatedly measured for a plurality of times by a nurse when the illness state of the patient is critical, so that the incidence rate of needle-stick injuries is reduced, and the workload of medical staff is greatly reduced, thereby ensuring that the nurse can rescue other critical patients in time, the requirement of the blood sugar measurement time is not influenced, and the decision of a doctor on the blood sugar change of the patient is not influenced.
Drawings
FIG. 1 is a schematic diagram of a continuous arterial blood glucose meter monitoring method;
FIG. 2 is a schematic diagram of an integrated harvesting injector;
fig. 3 is a schematic diagram of the test strip.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings:
as shown in fig. 1, the following describes the technical scheme of the invention in detail with reference to the accompanying drawings:
three parts 1, 2 and 3 in the figure are the pressure sensor of the arterial pressure monitor to the monitor display part: wherein 1 is an arterial pressure measurement monitor; 2 is a pressure sensor interface cable; 3 is a pressure sensor;
three parts 4, 5 and 6 in the figure are anticoagulated saline, infusion tube and valve part: wherein 4 is a valve; 5 is a dropping tube; 6 is anticoagulated brine;
in the figures, 7, 8, 9, 10 and 11 are infusion pressure pipes, infusion three-way switches, infusion pipe blood taking ports and arterial catheterization parts: wherein 7 is a tee a;8 is a tee joint b;9 is a pressure tube; 10 is a blood sucking port; 11 is arterial catheterization;
in the figures, 12 and 13 are two parts of a lead a and an electric switch on the lead: wherein 12 is an electric switch; 13 bit wire a.
In the figures, 14, 15, 16 and 17 are electric clamps controlled by a wire b and a wire, and the integrated acquisition syringe and the fixing clamp are as follows: wherein 14 is a specially made integrated collecting injector, which is called as an integrated collecting injector for short, and comprises an a rubber capsule part, a b clamping position cylinder and a c hollow metal needle. Description of the embodiments: at the tee b8 is a large-scale integrated collection syringe 14 capable of extracting liquids of the order of a few milliliters; 15 is an electric clamp for clamping the rubber capsule of the integrated collecting injector; 16 is a wire b;17 is a fixed clamp for clamping the cylinder at the clamping position of the middle part of the integrated acquisition injector;
18, 19, 20, 21, 22, 23, 24, 25 are portions of a rotating device for periodic automated collection and drip blood: wherein 18 is an electric clip for clamping the integrated collection syringe rubber capsule [ description: the automatic blood collection position is a small-sized integrated collection injector 14 which is small and can extract tens to hundreds of microliters of liquid; 19 is an electric clamp for clamping a cylinder at the middle clamping position of the integrated acquisition syringe; 20 is the wire c providing the motorized clasps 18 and 19; 21 is a rotary electric bracket a that can provide an electric rotary function for the electric clips 18 and 19; 22 is a picking area of the electric clamp 18 and the electric clamp 19 for clamping the integrated collecting injector; 23 is a blood sucking area where the electric clamp 18 and the electric clamp 19 clamp the integrated collecting syringe to suck blood; 24 is a blood test area where the electric clamp 18 and the electric clamp 19 clamp the integrated collection syringe to discharge blood for blood test; 25 is the disposal area of the electric clip 18 and the electric clip 19 for discarding or discarding the integrated collection syringe;
in the figures, 26, 27, 28 and 29 are parts for automatically operating the rotary electric bracket of the blood glucose test paper and the rotary table thereof to test and display blood glucose: wherein 26 is a wire d;27 is a test paper turntable of the blood glucose test paper, which comprises a plurality of installed blood glucose test papers, is convenient for later blood glucose test, and is uniformly connected with a 29 continuous arterial glucometer through 26 leads d; 28 is a rotary electric bracket b for automatically rotating 27 test paper turntables; reference numeral 29 denotes a continuous arterial blood glucose meter, which is capable of operating, programming and controlling the corresponding switching or rotation of 13, 16, 20, 26 and 21 rotary electric holders a, 27 rotary electric holder b via an interface. All wires herein are merely used to characterize the control of the data flow, in practice, the control of wired communication may be implemented, or the control and implementation of wireless communication may be implemented as desired
The graph 30 shows a glucose meter test strip including an a glucose reaction zone portion and a b electrode zone portion. Wherein the electrode area portion of the plurality of blood glucose meter test strips on the 27 test strip turntable is connected with the 29 blood glucose meter through the 26 lead d to measure the blood glucose value in blood.
The working process is as follows:
the first step: [ initial and working ]: all the equipment and devices according to fig. 1, including the arterial pressure measurement monitor 1 and the continuous arterial blood glucose meter 29, as well as the various fixing clamps 17 and the electric clamp 15, etc. are all in operation, the blood glucose test cycle of the blood glucose meter on the patient is set to be one time of N minutes (for example: 5 minutes), the timing of the blood glucose meter is started, and the arterial pressure measurement monitor 1 is operated normally. In normal operation of the arterial pressure measurement monitor, anticoagulated saline is injected into the drip tube 5 and the pressure tube 9 at a certain speed, the pressure sensor 3 converts the pressure in the tube into an electric signal, and the electric signal is transmitted to the arterial pressure monitor through the pressure sensor interface cable 2 for real-time display.
And a second step of: [ N minutes period ]: after N minutes are reached, the glucometer informs the arterial pressure measurement monitor of the suspension of working through a wired or wireless communication link, the timing time of the glucometer is automatically cleared, and timing is started again from 0.
And a third step of: the glucometer 29 controls the electric switch 12 through the control wire a 13. The electric switch 12 is controlled to close the tee joint a7 to prevent the anticoagulant salt from flowing downwards. At this time, the arterial pressure data of the pressure sensor 3 that measures the blood pressure remains unchanged.
Fourth step: the glucometer 29 controls the wire b16, opens the electric clamp 15 which is initially closed, and extracts a certain liquid from the pressure tube by virtue of the elastic force of the rubber capsule of the large-sized integrated collection syringe 14. It should be noted that this operation is necessary to ensure that the blood level in the arterial catheterization rises, and that the interface between the blood and the anticoagulated saline should be located between the blood collection port 10 and the tee b8, so that pure fresh blood can be obtained when the blood collection device of the blood collection port 10 collects blood.
Fifth step: [ get ]: the blood glucose meter 29 controls the rotating motorized support a21 to pass to the pick-up area 22 where a number of small sized integrated collection syringes 14 are stored in order, i.e., the integrated collection syringes 14 are small. The glucometer controls the electric clamp 18 and the electric clamp 19 to clamp the integrated collecting injector 14 to be small through the wire c 20. The motorized clasps 19 grasp the small grip posts b of the integral harvesting syringe 14 of the pick-up section 22. The electric clamp 18 simultaneously clamps the rubber capsule a at the small upper end of the integrated collection syringe 14 to remove the gas inside, so as to prepare for the subsequent absorption of blood.
Sixth step: [ blood sucking ]: the blood glucose meter 29 controls the rotation of the motorized pulley a21, rotates to the blood sucking region 23, and stops rotating. And controls the motorized clasps 19 and 18 via the wire c 20. The electric clamp 19 and the electric clamp 18 pierce the integrated collection syringe 14 into the blood collection device rubber cap at the blood collection port 10 while clamping the integrated collection syringe, and blood below the blood collection device rubber cap is communicated with blood of the pressure tube. After penetration, the electric clamp 18 is released, and blood is sucked by the elastic force of the small rubber capsule of the integrated collection syringe 14; after drawing blood, the motorized clasps 19 pull the integrated collection syringe 14 small off the blood collection set rubber cap of the blood draw.
Seventh step: [ blood test ]: the blood glucose meter 29 controls the rotation of the motorized support a21, rotates to the blood test area 24, and stops rotating. The blood glucose meter 29 controls the rotary electric support b28, and rotates the blood glucose reaction area a of the test paper 30 to the position below the small hollow metal needle of the integrated collection syringe 14 by a rotary or circulating device (here, a rotary test paper turntable 27) to wait for blood. The glucometer 29 controls the electric clamp 18 to clamp the rubber capsule on the integrated collecting injector 14 through the lead c20, extrudes the blood sucked in the integrated collecting injector 14, just can drop into the blood glucose reaction area a of the test paper 30 distributed on the test paper turntable 27, and the current after blood glucose reaction is conducted to the glucometer 29 through the electrode area of the test paper 30 and the lead d26 to display, record, store, count and trend forecast, and sends the warning and alarm to the user through the intelligent wireless communication mode carried by the glucometer.
Eighth step: [ Disposable ]: the glucometer 29 controls the rotation of the motorized carriage a21, to the discard zone 25, and controls the release of the motorized 18 and 19 clamps via the wire c20, discarding the integrated collection syringe 14 for a small period, and stopping the rotation, waiting for the next cycle to be entered. The glucometer 29 controls the rotating motorized support b28 to pull out the previously used test strip 30 so that the electrode area of the strip breaks away from the wire d (26) waiting for the next cycle to be entered. If all the test papers of the test paper turntable are pulled out, the test papers need to be loaded, and the test paper turntable is loaded completely at one time
Ninth step: [ Send stream ]: the blood glucose meter 29 controls the electric clamp 15 through the lead b16 to squeeze the rubber capsule of the integrated collection syringe 14 so that the liquid inside thereof is discharged into the pressure tube 9, thereby returning the anticoagulated saline and blood to the blood through the arterial catheter 11 while the anticoagulated saline flushes the blood taking port 10. The blood glucose meter 29 turns on the electric switch 12 via the lead a13 to conduct the saline water from the upper and lower sides of the tee a7, and continuously supplements the arterial catheterization 11 with the anticoagulated saline water 6 at a certain speed. At the same time, the blood glucose meter informs the arterial pressure measurement monitor to continue working, the pressure sensor 3 continues to work normally, and a signal is transmitted to the arterial pressure measurement monitor 1 for display, through a wired or wireless communication link.
Tenth step: [ re-measurement ]: and if the time is less than N minutes, continuing the working process of the arterial pressure monitor. If N minutes are reached, the process loops to the second step, from the second step to the 9 th step, of the glucometer 29 are performed.
Claims (2)
1. A continuous arterial blood glucose monitoring device, characterized by: the continuous arterial blood sugar monitoring equipment provides continuous arterial blood sugar measurement for clinical critical patients and comprises a blood sugar meter, an arterial pressure measurement monitor, a wire, an electric switch, an integrated acquisition injector, an electric clamp, a rotary electric bracket and blood sugar test paper;
the glucometer controls the electric switch through the control wire a, controls the electric switch to close the tee joint a, and prevents anticoagulation salt from flowing downwards; the blood glucose meter control lead b opens the electric clamp 15 which is initially closed, and certain liquid is extracted from the pressure pipe by virtue of the elastic force of the rubber capsule of the large-sized integrated collection syringe, so that the blood level in the arterial catheterization rises, and the interface between the blood and the anticoagulated saline is positioned between the blood taking port and the tee joint b;
the glucometer controls the electric switch and the electric clamp to act through the lead and is used for realizing the specific position and specific action of the small-sized integrated acquisition injector;
the blood glucose meter is used for automatically monitoring blood glucose by rotating the electric bracket and is used for circularly accessing blood glucose test paper, extracting electric signals and updating the blood glucose test paper; the glucometer controls the rotary electric bracket a to rotate, so that the electric bracket a stays in the taking area, the blood sucking area, the blood testing area or the discarding area;
when the electric bracket a stays in the workpiece taking area, the glucometer controls the electric clamp 18 and the electric clamp 19 to clamp a small-sized integrated collecting injector through the lead c, wherein the small-sized integrated collecting injector comprises a rubber capsule, a clamping position cylinder and a hollow metal needle; the electric clamp 19 clamps the cylinder of the clamping position of the small-sized integrated collecting injector in the workpiece taking area, and the electric clamp 18 clamps the rubber capsule at the upper end of the small-sized integrated collecting injector at the same time to remove the gas inside;
when the electric bracket a stays in the blood sucking area, the glucometer controls the electric clamp 19 through the lead c, and the electric clamp 19 and the electric clamp 18 pierce the rubber cap of the blood taking device at the blood taking port when clamping the small-sized integrated collecting syringe, and blood below the rubber cap of the blood taking device is communicated with blood of the pressure tube; after penetration, the electric clamp 18 is loosened, and blood is sucked by the elastic force of the small-sized integrated collection syringe rubber capsule; after sucking blood, the electric clamp 19 pulls out the small-sized integrated collection syringe from the rubber cap of the blood taking device in the blood sucking area;
when the electric bracket a stays in the blood test area, the glucometer controls the rotary electric bracket b to rotate, and the test paper is transferred to the lower part of the hollow metal needle of the small-sized integrated acquisition injector through the rotary test paper turntable; the glucometer controls the electric clamp 18 to clamp the rubber capsule on the small-sized integrated collecting injector through the lead c, extrudes the blood sucked in the small-sized integrated collecting injector, drops the blood into a test paper blood sugar reaction area distributed on the test paper turntable, conducts the current after blood sugar reaction to the glucometer through the electrode area of the test paper and the lead d for displaying, recording, storing, counting and trend prediction, and sends the current to a user for reminding and alarming in an intelligent wireless communication mode carried by the glucometer; the blood glucose meter is connected with the arterial pressure measurement monitor by a wired or wireless method, and the liquid is conducted and cut off in the infusion pressure tube by an electric switch;
specifically, the glucometer controls the electric clip 15 through the lead b to squeeze the rubber capsule of the large-sized integrated collection syringe, so that the liquid in the glucometer is discharged into the pressure tube; the glucometer turns on the electric switch through the lead a to lead the upper and lower saline water of the tee joint a to be conducted, and continuously supplements the anticoagulated saline water to the arterial catheterization at a certain speed; meanwhile, the glucometer informs the arterial pressure measurement monitor to work continuously through a wired or wireless communication link, the pressure sensor continues to work normally, and signals are transmitted to the arterial pressure measurement monitor for display;
the capacity of the integrated collection syringe is proportional to the amount of collected or injected blood to be achieved, and the volume of the integrated collection syringe of a small size and the amount of blood actually sucked are directly determined by the blood amount required by the blood glucose test paper, and the volume of the integrated collection syringe of a large size is set according to the following method:
wherein r is the radius of the inner tube of the pressure tube;is the circumference ratio; l is the distance from the arterial catheterization to the blood taking port; n is a length coefficient; v is the volume of liquid that needs to be drawn from the pressure tube inside of the large scale integrated collection syringe.
2. A continuous arterial blood glucose monitoring device as claimed in claim 1, wherein: the glucose meter can be manually controlled and programmed, and its control variables are embodied by the movement means.
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| CN112494023A (en) * | 2019-09-16 | 2021-03-16 | 深圳市惠心诺科技有限公司 | Closed invasive blood pressure monitoring equipment with blood sampling function |
| CN113116348B (en) * | 2021-03-02 | 2022-09-27 | 天津大学 | Continuous arterial blood detection device |
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