Central venous pressure measuring device

Abstract

The utility model discloses a central venous pressure measuring device which is characterized in that the central venous pressure measuring device comprises a bottle body, a pressure measuring tube, a functional end and other structures, central venous pressure measurement and infusion can be carried out at the same time, single-person operation is achieved, the measuring process is simplified, the measuring accuracy and stability are improved, interference of bubbles, thrombus and the like is avoided, and the risk of infection is reduced. The infusion apparatus further comprises a three-way plug valve, an infusion tube, an infusion bag, an extension hose, a flow regulator and the like, seamless switching between pressure measurement and infusion can be achieved, and the infusion amount can be adjusted according to the condition of a patient so as to achieve the best treatment effect. The central venous pressure monitoring system is further matched with a pressure sensor, a pressure transmitter, an electrocardiograph monitor and other components, electronic monitoring of the central venous pressure can be achieved, observation and recording of medical staff are facilitated, the analysis and judgment efficiency and level of the central venous pressure are improved, and more information and basis are provided for diagnosis and treatment of a patient.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a central venous pressure measuring device. BACKGROUND

[0002] Central venous pressure (CVP) refers to the pressure of right atrium and upper and lower cava thoracic segment, can be used to estimate the comprehensive situation of patient's blood volume, heart function and vascular tone, is an important hemodynamic monitoring index. The measurement method of central venous pressure is usually through the insertion of central venous catheter, the one end of catheter is connected to pressure gauge or electrocardiograph monitor, the other end of catheter is inserted into the central vein of patient, such as internal jugular vein or subclavian vein, then according to the pressure value or wave form shown on pressure gauge or electrocardiograph monitor judges the height of central venous pressure.

[0003] At present, when CVP is measured manually in clinic, since infusion apparatus does not have scale, needs 2 people to cooperate operation, one person holds infusion apparatus and pulls out from saline bottle and makes its tip upward, another person holds measuring scale and observes the descent of liquid in pipe, records CVP numerical value, and it is inconvenient. Such repeated operation, infusion apparatus tip is exposed to air, and infusion apparatus is inserted into infusion bottle again after each pressure measurement, and air is discharged, and infusion continues, and it is easy to contaminate. In addition, infusion apparatus is long, and operation is time-consuming and laborious, and there is the risk of increasing deep vein catheter blockage.

[0004] Therefore, a central venous pressure measuring device with simple structure and convenient operation is needed to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at overcoming the above-mentioned insufficient in prior art, and provides a central venous pressure measuring device capable of simultaneously measuring central venous pressure and infusion.

[0006] The utility model solves the above-mentioned technical scheme adopted by the technical scheme: a central venous pressure measuring device, the bottle body upper end is fixed with the lifting ring, the lifting ring lower part and bottle body connecting part are provided with the exhaust hole, the exhaust hole is provided with the filter core, the bottle body lower mouth is connected with the pressure measuring tube, the pressure measuring tube wall is provided with the scale line, and the end of pressure measuring tube is provided with the threaded interface, the bottle body lower part and the connecting part of pressure measuring tube are provided with the functional end.

[0007] Preferably, the threaded interface of the pressure measuring tube is connected to the female luer port of the three-way stopcock, another female luer port of the three-way stopcock is connected to the infusion tube, the other end of the infusion tube is sequentially connected to the Mohs' drip tube and the bottle needle, the bottle needle is inserted into the infusion bag, the male luer port of the three-way stopcock is connected to the extension hose, the other end of the extension hose is sequentially connected to the liquid filter and the intravenous infusion needle, and the flow regulator is arranged outside the infusion tube.

[0008] Preferably, the scale line of the pressure measuring tube is 0-30cm, each 5mm is a large scale, the corresponding value is marked on one side of each large scale, there are four small scales between each large scale, and each small scale represents 1mm.

[0009] Preferably, the zero scale line of the pressure measuring tube is provided with a dot mark.

[0010] Preferably, the diameter of the pressure measuring tube is 3mm, the length is 50cm, and the material is transparent polyvinyl chloride.

[0011] Preferably, the knob on the upper end surface of the three-way stopcock is T-shaped, and the surface is provided with three sets of arrow marks indicating the opening and closing positions.

[0012] Preferably, the pressure sensor, the pressure transmitter and the electrocardio monitor are also adapted, the functional end is connected with the pressure sensor, the pressure sensor is connected with the pressure transmitter, and the pressure transmitter is connected with the electrocardio monitor.

[0013] Compared with the prior art, the utility model has the following advantages and effects:

[0014] (1) The central venous pressure measuring device of the utility model adopts the structures of the bottle body, the pressure measuring tube and the functional end, integrates the infusion device, the measuring scale, the three-way device and the extension pipe, overcomes the defects of the original pressure measuring device, such as complex connection, many joints and easy falling of the joints, realizes single-person operation, simplifies the measuring process, avoids the error generated in the process of holding the scale to zero by two persons, improves the accuracy and stability of the measurement, avoids the interference of bubbles and thrombus and reduces the risk of infection.

[0015] (2) The central venous pressure measuring device of the utility model adopts the structures of the three-way stopcock, the infusion tube, the Mohs' drip tube, the bottle needle and the infusion bag, realizes the integration of the CVP measurement and the infusion, saves space and materials, facilitates operation and management, and can also adjust the infusion amount and the drug dosage according to the condition of the patient to achieve the best treatment effect.

[0016] (3) The utility model discloses a central venous pressure measuring device adopts pressure sensor, pressure transmitter, electrocardiograph monitor and other components, realized the electronic monitoring of CVP, has facilitated the observation and record of medical staff, improved the analysis and the judgment's efficiency and level of CVP, can also monitor the other cardiovascular related index of patient, such as heart rate, blood pressure, blood oxygen saturation degree etc. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of the utility model embodiment.

[0018] Figure 2 Figure 3 It is the partial enlarged schematic diagram of the utility model embodiment.

[0019] Figure 4 It is the working principle diagram of the utility model embodiment using tee.

[0020] Figure 5 It is the working schematic diagram of the utility model embodiment using electrocardiograph monitor.

[0021] Drawing number: bottle body 1, lifting ring 2, exhaust hole 3, filter core 31, pressure measuring tube 4, scale line 41, threaded interface 42, dot mark 43, functional end 5, tee plug valve 6, knob 61, female luer port 62, male luer port 63, infusion tube 7, moor's dropping funnel 8, bottle needle 9, infusion bag 10, extension hose 11, liquid medicine filter 12, intravenous infusion needle 13, flow regulating valve 14, pressure sensor 15, pressure transmitter 16, electrocardiograph monitor 17. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail in combination with the drawings and by embodiment, and the following embodiment is the explanation of the utility model, and the utility model is not limited to the following embodiment.

[0023] Embodiment 1:

[0024] Referring to Figure 1 Figure 3 In the embodiment, a central venous pressure measuring device is disclosed, which is particularly used for monitoring and adjusting the hemodynamic state of critical patients, and specifically comprises a bottle body 1, a lifting ring 2 is fixed to the upper end of the bottle body 1, an exhaust hole 3 is arranged at the connecting part between the lifting ring 2 and the bottle body 1, a filter core 31 is arranged in the exhaust hole 3, a pressure measuring tube 4 is connected to the lower opening of the bottle body 1, a scale line 41 is arranged on the wall of the pressure measuring tube 4, a threaded interface 42 is arranged at the end of the pressure measuring tube 4, and a functional end 5 is arranged at the connecting part between the bottle body 1 and the pressure measuring tube 4.

[0025] ​​Specifically, in the present embodiment, the specific operation is as follows:

[0026] First, the bottle body 1 is hung on the bedside or other suitable position through the lifting ring 2, so that the bottle body 1 is at a height higher than the heart level of the patient, to ensure that the liquid in the bottle body 1 can flow into the pressure measuring tube 4 naturally. Then the threaded interface 42 of the pressure measuring tube 4 is connected with the corresponding interface of the central venous catheter, so that the liquid in the bottle body 1 can enter the central venous catheter through the pressure measuring tube 4, thereby balancing with the central venous pressure of the patient.

[0027] Before measurement, open the air vent 3, inject physiological saline at the functional end 5, and exhaust the air in the central venous pressure measuring device tube cavity at one time, while observing the scale line 41 of the pressure measuring tube 4, adjusting the height of the bottle body 1, so that the liquid level in the pressure measuring tube 4 is aligned with the zero point scale line 41, then closing the air vent 3, completing the zero point calibration.

[0028] During measurement, the scale line 41 of the pressure measuring tube 4 is directly observed, and the central venous pressure value of the patient is read, while paying attention to whether the liquid level in the pressure measuring tube 4 fluctuates or not, to judge the heart rate and rhythm of the patient.

[0029] After the measurement is completed, the air vent 3 is closed, the connection between the pressure measuring tube 4 and the central venous catheter is disconnected, the liquid in the bottle body 1 is poured out, and the bottle body 1, the pressure measuring tube 4 and the functional end 5 are cleaned and sterilized, ready for next use.

[0030] The central venous pressure measuring device has the advantages of simple structure, convenient operation, no need to fix the measuring scale and zero point by hand, realization of single person measurement of the central venous pressure of the patient, accurate reflection of the hemodynamic state of the patient, facilitation of timely adjustment of liquid treatment and drug treatment, and improvement of rescue effect and safety of the patient.

[0031] Embodiment 2:

[0032] Referring to Figure 4 , the threaded interface 42 of the pressure measuring tube 4 is connected and adapted with the female luer port 62 of the three-way plug valve 6, another female luer port 62 of the three-way plug valve 6 is connected with the infusion tube 7, the other end of the infusion tube 7 is sequentially connected with the morrison dropping funnel 8 and the bottle needle 9, the bottle needle 9 is inserted with the infusion bag 10, the male luer port 63 of the three-way plug valve 6 is connected with the extension hose 11, the other end of the extension hose 11 is sequentially connected with the liquid medicine filter 12 and the intravenous infusion needle 13, and the flow regulator is further arranged on the outside of the infusion tube 7.

[0033] In the present embodiment, compared with embodiment 1, by connecting the measuring tube with the three-way plug valve 6, seamless switching of pressure measurement and infusion can be realized, and the specific operation method is as follows:

[0034] First, the infusion tube 7 is inserted into the bag opening of the infusion bag 10, hung on the infusion stand, connected to the female luer port 62 of the three-way stopcock valve 6, and then the pressure measuring tube 4 is connected to the other female luer port 62 of the three-way stopcock valve 6. The physiological saline is injected into the bottle body 1 through the functional end 5, and the air in the central venous pressure measuring device lumen is exhausted under the action of gravity. The male luer port 63 of the three-way stopcock valve 6 is connected with the central venous catheter. Before measurement, the air vent 3 is opened, physiological saline is injected at the functional end 5, and the air in the three-way central venous pressure measuring device lumen is exhausted at one time. At the same time, the scale line 41 of the pressure measuring tube 4 is observed, the height of the bottle body 1 is adjusted so that the liquid level in the pressure measuring tube 4 is aligned with the zero scale line 41, and then the air vent 3 is closed to complete the zero calibration. Then, after confirming that the catheter is unobstructed, the three-way stopcock valve 6 is rotated to close the infusion tube 7 infusion, so that the pressure measuring tube 4 is connected with the central venous catheter, and the liquid level in the pressure measuring tube 4 is observed to be stable. At this time, the scale corresponding to the liquid level in the pressure measuring tube 4 is read to obtain the CVP value. After measurement, the three-way stopcock valve 6 is rotated again to close the female luer port 62 on one side of the pressure measuring tube 4, so that the infusion tube 7 is connected with the central venous catheter. According to the CVP value, the liquid flow rate in the infusion tube 7 is adjusted through the flow regulator outside the infusion tube 7, or in the case of abnormal CVP value, the medical staff carries out further rescue operation.

[0035] The scale line 41 of the pressure measuring tube 4 has a value of 0-30cm, every 5mm is a large scale, and every interval of the large scale has a corresponding value on one side. There are 4 small scales between each large scale, and each small scale represents 1mm. The scale line 41 has a spacing of 1mm, and the scale mark range is 0-30cm. The design of the scale line 41 can make the reading of the pressure measuring tube 4 more clear, accurate and convenient, and avoid errors or difficulties caused by too dense or too sparse scale lines 41. At the same time, the range of the scale line 41 is also suitable for measuring the general central venous pressure range, and will not cause the problem of too large or too small measurement range.

[0036] The zero scale line 41 of the pressure measuring tube 4 is provided with a dot mark 43, which is convenient for zero calibration and measurement. Before measurement, the liquid level in the pressure measuring tube 4 needs to be aligned with the zero scale line 41, and then the air vent 3 is closed to complete the zero calibration. During measurement, the central venous pressure value of the patient needs to be directly observed from the scale line 41 of the pressure measuring tube 4. If the zero scale line 41 of the pressure measuring tube 4 is not provided with a dot mark 43, it may cause the line of sight to be not aligned with the liquid level or to be confused with other scale lines 41, which affects the accuracy and stability of measurement. Therefore, the zero scale line 41 provided with the dot mark 43 can improve the efficiency and level of measurement.

[0037] The diameter of the pressure measuring tube 4 is 3mm, the length is 50cm, and the material is transparent polyvinyl chloride. The knob 61 on the upper end face of the three-way stopcock valve 6 is T-shaped, and the surface is provided with three sets of arrow marks indicating the opening and closing position. The design of the T-shaped knob 61 can make the operator more easily hold and rotate the stopcock valve, improve the convenience and comfort of operation. At the same time, the T-shaped knob 61 can also increase the torque of the stopcock valve, so that the stopcock valve is more easily opened and closed, and the efficiency and reliability of operation are improved. The design of the arrow mark can make the operator more clearly see the current state and flow direction of the stopcock valve, avoid the error and confusion of operation. At the same time, the arrow mark can also indicate the operator how to correctly rotate the stopcock valve, realize the seamless switching of pressure measurement and infusion, and improve the accuracy and safety of operation.

[0038] Embodiment 3:

[0039] Referring to Figure 5 The utility model also includes pressure sensor 15, pressure transmitter 16, electrocardio monitor 17, functional end 5 with pressure sensor 15 is connected, and pressure sensor 15 is connected with pressure transmitter 16, and pressure transmitter 16 is connected with electrocardio monitor 17. Pressure sensor 15 is piezoelectric pressure sensor 15, can convert the pressure signal in pressure measuring tube 4 into electric signal, and output to pressure transmitter 16. Pressure transmitter 16 is digital pressure transmitter 16, can convert the electric signal of pressure sensor 15 into digital signal, and output to electrocardio monitor 17. Electrocardio monitor 17 is multifunctional electrocardio monitor 17, can display CVP's waveform, numerical value, average value, maximum value, minimum value and other parameters simultaneously, and other cardiovascular related indexes, such as heart rate, blood pressure, blood oxygen saturation etc. The utility model can be used with electrocardio monitor, and its specific operation steps are as follows:

[0040] First, hang the bottle body 1 on the bedside table, make it higher than the right atrium level of the patient, then insert the infusion bag 10 into the bottle needle 9, connect the infusion tube 7 to one female luer port 62 of the three-way stopcock valve 6, connect the extension hose 11 to the male luer port 63 of the three-way stopcock valve 6, connect the liquid filter 12 and the intravenous infusion needle 13 to the other end of the extension hose 11 in turn, and insert the intravenous infusion needle 13 into the central vein of the patient, such as the right subclavian vein or internal jugular vein.

[0041] Second, connect and adapt the threaded interface 42 of the pressure measuring tube 4 to the other female luer port 62 of the three-way stopcock valve 6, connect the other end of the pressure measuring tube 4 to the functional end 5, connect the functional end 5 to the pressure sensor 15, connect the pressure sensor 15 to the pressure transmitter 16, and connect the pressure transmitter 16 to the electrocardio monitor 17. Adjust the infusion speed, make the pressure measuring tube 4 full of liquid, exclude air bubbles, and make the pressure in the pressure measuring tube 4 equal to the central venous pressure.

[0042] Finally, the zero position of the electrocardiograph 17 is adjusted to be the same as the right atrium level of the patient, the power supply of the electrocardiograph 17 is turned on, the monitoring mode of the CVP is selected, and the waveform, numerical value, average value, maximum value, minimum value and other parameters of the CVP displayed on the electrocardiograph 17, as well as other cardiovascular related indexes such as heart rate, blood pressure, blood oxygen saturation and the like are observed.

[0043] The above in the specification is only an example of the utility model. The skilled in the art to which the utility model belongs can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as it does not deviate from the content of the utility model specification or exceed the range defined by the claims, and it shall belong to the protection scope of the utility model.

Claims

1. A central venous pressure measuring device, characterized by: Including bottle body, the upper end of the bottle body is fixed with a lifting ring, the lifting ring is provided with an exhaust hole below the connecting part of the bottle body, the exhaust hole is provided with a filter element, the lower opening of the bottle body is connected with a pressure measuring tube, the tube wall of the pressure measuring tube is provided with a scale line, the end of the pressure measuring tube is provided with a threaded interface, and the connecting part of the bottle body below the pressure measuring tube is provided with a functional end.

2. The central venous pressure measuring device according to claim 1, characterized in that: The threaded interface of the pressure measuring tube is connected and adapted with the female luer port of a three-way plug valve, another female luer port of the three-way plug valve is connected with a infusion tube, the other end of the infusion tube is sequentially connected with a moor's dropper and a bottle needle, the bottle needle is inserted with an infusion bag, the male luer port of the three-way plug valve is connected with an extension hose, the other end of the extension hose is sequentially connected with a liquid filter and an intravenous infusion needle, and the infusion tube is further provided with a flow regulator outside.

3. A central venous pressure measuring device according to claim 2, characterized in that: The scale line of the pressure measuring tube is 0-30cm, every 5mm is a large scale, the corresponding value is marked on one side of every large scale, there are four small scales between every large scale, every small scale represents 1mm, the scale line interval is 1mm, and the scale mark range is 0-30cm.

4. The central venous pressure measuring device according to claim 3, characterized in that: The zero scale line position of the pressure measuring tube is provided with a dot mark.

5. A central venous pressure measuring device according to claim 4, characterized in that: The diameter of the pressure measuring tube is 3mm, the length is 50cm, and the material is transparent polyvinyl chloride.

6. The central venous pressure measuring device according to claim 2, characterized in that: The knob on the upper end surface of the three-way plug valve is T-shaped, and the surface is provided with three sets of arrow marks indicating the opening and closing position of the three-way plug valve.

7. The central venous pressure measuring device according to claim 1, characterized in that: It is also adapted with a pressure sensor, a pressure transmitter and an electrocardiograph, characterized in that the functional end is connected with the pressure sensor, the pressure sensor is connected with the pressure transmitter, and the pressure transmitter is connected with the electrocardiograph.

Images