CN217310278U - A new simple device for manual measurement of central venous pressure - Google Patents

Abstract

The utility model provides a novel simple device for manually measuring central venous pressure, which comprises a scale and a measuring tube, wherein the scale is clamped outside the measuring tube, the measuring tube comprises a pressure regulating mechanism, a water column tube, a three-way valve and a connecting tube which are connected in sequence, the inner side of the water column tube is provided with a small ball, the bottom end of the water column tube is in a downward contraction shape, one side interface of the three-way valve is a positive pressure interface, and the positive pressure interface is connected with a transfusion device; the inboard of scale is provided with the draw-in groove, and the draw-in groove includes pipeline draw-in groove and the three-way valve draw-in groove that suits with water column pipe and three-way valve. The utility model discloses a structural design of integration after the installation makes medical personnel need not to separate infusion set and can realize measuring many times, and the exhaust is easy and simple to handle, avoids pulling out repeatedly and inserts and causes the interface to pollute, utilizes the intraductal bobble of the downward shrink form of water column tube bottom and water column, and cooperation pressure regulating mechanism utilizes the gap liquid to hinder isolated part air, strives for the time of closing the three-way valve for the operator, prevents to produce the air embolism.

Description

Translated fromChinese

一种新型中心静脉压手工测量简易装置A new simple device for manual measurement of central venous pressure

技术领域technical field

本实用新型属于中心静脉压测量技术领域，具体涉及一种新型中心静脉压手工测量简易装置。The utility model belongs to the technical field of central venous pressure measurement, in particular to a novel simple device for manual measurement of central venous pressure.

背景技术Background technique

中心静脉压(CVP)是上、下腔静脉进入右心房处的压力，它受右心功能、循环血量、血管张力等因素影响，是临床观察血液动力学的主要指标之一，目前主要测量方法为两种，一种是通过将中心静脉导管连接压力传感器，在有中心静脉压测量模块的心电监护仪(多功能心电监护)上显示，另一种是通过手工测量获取，将输液器一端插入生理盐水袋充盈排气后另一端连接中心静脉导管，然后将输液器从盐水袋中拔出，让输液器内盐水自然下落，借助刻度尺读取零刻度上水柱的长度。后者在没有多功能心电监护仪时或者一些普通病房应用比较普遍。Central venous pressure (CVP) is the pressure at which the superior and inferior vena cava enters the right atrium. It is affected by factors such as right heart function, circulating blood volume, and vascular tension. It is one of the main indicators of clinical observation of hemodynamics. There are two methods, one is to connect the central venous catheter to the pressure sensor and display it on the ECG monitor (multi-function ECG monitor) with a central venous pressure measurement module, the other is to obtain it by manual measurement, and the infusion One end of the infusion device is inserted into the saline bag to be filled and exhausted, and the other end is connected to the central venous catheter, and then the infusion device is pulled out from the saline bag, and the saline in the infusion device is allowed to fall naturally. The latter is more common when there is no multifunctional ECG monitor or in some general wards.

实际操作过程中手工测量的方法需他人配合，时间较为紧凑的情况下仅靠一位医护人员无法完成测量，给临床护理工作带来困扰，且在患者CVP极低的特殊情况下，水柱快速放空导致产生空气栓塞，无法满足临床快速简单安全的测量需要，而目前精密输液器具有的防空栓功能无法在测量时使用，且输液器在测量时可能需要被反复拔插，容易导致瓶塞漏液、生理盐水及输液器污染。The manual measurement method in the actual operation requires the cooperation of others. In the case of a relatively tight time, only one medical staff cannot complete the measurement, which brings trouble to clinical nursing work. In the special case of the patient's extremely low CVP, the water column is quickly emptied. This leads to the generation of air embolism, which cannot meet the needs of fast, simple and safe clinical measurement. The anti-air embolism function of the current precision infusion set cannot be used during measurement, and the infusion set may need to be repeatedly pulled and inserted during measurement, which may easily lead to the leakage of the bottle plug. , saline and infusion set pollution.

现有针对中心静脉压测量过程中产生空气栓塞的情况进行改进的中心静脉压测量装置，中国专利(CN201921459777.9)公开了中心静脉压测量装置，通过在主体管道的首尾两端设空气半透膜，在主体管道垂直段刻度以下连接精密过滤器，将正压接头设于首端空气半透膜和主体管道垂直段刻度之间，使装置能够平衡管内外大气压平衡，防止空气进入主体管道的水平段产生空气栓塞，有效避免测量过程中液体受到空气污染，操作方便快捷，但空气半透膜和精密过滤器的结构造价过高，装置的生产有一定的难度，不利于装置的量产，且反复测量时操作步骤繁琐，精密过滤器的排空气量有限，多次测量后就会起不到过滤空气的作用。There is an existing central venous pressure measuring device that is improved for the situation of air embolism during the central venous pressure measurement. The Chinese patent (CN201921459777.9) discloses the central venous pressure measuring device. Membrane, connect the precision filter below the scale of the vertical section of the main pipe, and set the positive pressure joint between the air semi-permeable membrane at the head end and the scale of the vertical section of the main pipe, so that the device can balance the atmospheric pressure inside and outside the pipe and prevent air from entering the main pipe. Air embolism occurs in the horizontal section, which can effectively prevent the liquid from being polluted by air during the measurement process, and the operation is convenient and fast. However, the structural cost of the air semi-permeable membrane and the precision filter is too high, and the production of the device is difficult, which is not conducive to the mass production of the device. In addition, the operation steps are cumbersome during repeated measurement, and the exhaust air volume of the precision filter is limited.

实用新型内容Utility model content

本实用新型提供一种新型中心静脉压手工测量简易装置，可以解决现有技术中的中心静脉压测量装置手动操作不便，多次测量需要拔插输液装置造成接口污染，在患者CVP极低或水柱管内注液量不足的情况下，测量装置内的空气进入体内产生空气栓塞，现有解决空气栓塞的测量装置造价高，生产有难度，排气量有限的问题。The utility model provides a novel and simple device for manual measurement of central venous pressure, which can solve the inconvenience of manual operation of the central venous pressure measurement device in the prior art, the need to pull out and insert the infusion device for multiple measurements, resulting in interface pollution, and when the patient has extremely low CVP or water column When the amount of liquid injected in the tube is insufficient, the air in the measuring device enters the body to cause air embolism. The existing measuring devices for solving the air embolism have the problems of high cost, difficult production and limited exhaust volume.

为解决上述技术问题，本实用新型采用如下技术方案：In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

一种新型中心静脉压手工测量简易装置，包括标尺和测量管，所述标尺可拆卸安装于所述测量管的外侧，所述标尺上开有刻度，所述测量管包括依次连接的调压机构、水柱管、三通阀和连接管，所述水柱管为硬质水柱管，所述水柱管的内侧放置有小球，所述水柱管底端呈向下收缩状，所述三通阀的一侧接口为正压接口，所述正压接口连接有输液装置。A novel simple device for manual measurement of central venous pressure, comprising a scale and a measuring tube, the scale is detachably mounted on the outside of the measuring tube, the scale is provided with a scale, and the measuring tube includes a pressure regulating mechanism connected in sequence , a water column tube, a three-way valve and a connecting tube, the water column tube is a hard water column tube, a small ball is placed on the inner side of the water column tube, the bottom end of the water column tube is downwardly contracted, and the three-way valve One side interface is a positive pressure interface, and the positive pressure interface is connected with an infusion device.

在一些实施例中，所述标尺的内侧开有卡槽，所述标尺通过卡槽卡接于所述测量管的外侧，所述卡槽包括与所述水柱管和三通阀相适的管道卡槽和三通阀卡槽，所述管道卡槽和三通阀卡槽的内侧贯通连接，操作方便，测量管安装至标尺内的同时即可完成零点对准定位。In some embodiments, the inner side of the scale is provided with a clamping groove, the scale is clamped to the outer side of the measuring tube through the clamping groove, and the clamping groove includes a pipe suitable for the water column pipe and the three-way valve The clamping groove and the three-way valve clamping groove are connected through the inner side of the pipe clamping groove and the three-way valve clamping groove, and the operation is convenient, and the zero point alignment and positioning can be completed when the measuring tube is installed in the ruler.

在一些实施例中，所述三通阀的外侧与所述三通阀卡槽的接触面积占所述三通阀的外侧总面积的比例为25％～35％，以便于快速对所述三通阀的外侧进行卡接固定。In some embodiments, the contact area between the outside of the three-way valve and the three-way valve card groove accounts for 25% to 35% of the total area of the outside of the three-way valve, so that the three-way valve can be quickly adjusted to the three-way valve. The outer side of the through valve is clamped and fixed.

在一些实施例中，所述调压机构为墨菲式滴壶，所述墨菲式滴壶的顶端开有排气孔和孔帽，用于排出管内空气。In some embodiments, the pressure regulating mechanism is a Murphy-type drip pot, and the top of the Murphy-type drip pot is provided with a vent hole and a hole cap for discharging the air in the pipe.

在一些实施例中，所述小球的直径介于水柱管的中部管径与最底端管径之间，所述小球的密度不小于1.03×10³kg/m³，使所述小球能够随液面下降至在所述水柱管底端。In some embodiments, the diameter of the small ball is between the middle pipe diameter and the bottommost pipe diameter of the water column pipe, and the density of the small ball is not less than 1.03×10³ kg/m³ , so that the small The ball can descend with the liquid level to the bottom end of the water column tube.

进一步的，在一些实施例中，所述小球为具有韧性的弹性材料构件，使所述小球能够随意地进出所述水柱管底端。Further, in some embodiments, the small ball is a flexible elastic material member, so that the small ball can enter and exit the bottom end of the water column tube at will.

进一步的，在一些实施例中，所述水柱管底端呈漏斗形，所述水柱管底端斜度范围为15°～45°，对管内液体产生聚集作用，减缓液体流速。Further, in some embodiments, the bottom end of the water column tube is funnel-shaped, and the inclination of the bottom end of the water column tube ranges from 15° to 45°, which aggregates the liquid in the tube and slows down the liquid flow rate.

进一步的，在一些实施例中，所述硬质水柱管的内壁作光滑疏水处理。Further, in some embodiments, the inner wall of the hard water column pipe is treated with smooth hydrophobicity.

与现有技术相比，本实用新型的有益效果为：Compared with the prior art, the beneficial effects of the present utility model are:

1.通过安装后一体化的结构设计，使医护人员无需分离输液装置即可实现多次测量，排气操作简便，避免反复拔插造成接口污染，利用水柱管底端的向下收缩状和水柱管内小球，配合调压机构，使小球可随水柱管内液面下降自动卡进下端漏斗部，利用缝隙液阻隔绝部分空气，减缓了患者CVP低于大气压的特殊情况时液体的放空速度，为操作者争取关闭三通阀的时间，防止产生空气栓塞。1. Through the integrated structure design after installation, medical staff can achieve multiple measurements without separating the infusion device. The exhaust operation is simple and easy to avoid interface pollution caused by repeated insertion and removal. The small ball cooperates with the pressure regulating mechanism, so that the small ball can be automatically stuck into the lower funnel as the liquid level in the water column tube drops, and the gap liquid resistance is used to isolate part of the air, which slows down the liquid venting speed when the patient's CVP is lower than the atmospheric pressure. The operator strives for the time to close the three-way valve to prevent air embolism.

2.通过标尺对水柱管和三通阀的同时卡接，使装置能够利用标尺和测量管的安装，同时实现测量管的固定和测量对准定位，简化了医护人员的手动测量过程，无需他人配合，提高了测量效率。2. The water column tube and the three-way valve are simultaneously clamped by the ruler, so that the device can use the installation of the ruler and the measuring tube, and at the same time realize the fixing of the measuring tube and the alignment and positioning of the measurement, which simplifies the manual measurement process of medical staff, and does not require others. With this, the measurement efficiency is improved.

3.通过标尺、水柱管的结构设计，使装置无需其他辅助结构实现测量过程中的固定和对准，且结构简单，无需精密维护，降低了生产难度和实际测量难度，减少了制造成本和使用成本，便于医护人员随身携带。3. Through the structural design of the ruler and the water column tube, the device can be fixed and aligned during the measurement process without other auxiliary structures, and the structure is simple, and precise maintenance is not required, which reduces the difficulty of production and actual measurement, and reduces the manufacturing cost and use. The cost is convenient for medical staff to carry with them.

附图说明Description of drawings

图1为本实用新型的整体结构示意图；Fig. 1 is the overall structure schematic diagram of the present utility model;

图2为本实用新型的测量管结构示意图；Fig. 2 is the measuring tube structure schematic diagram of the utility model;

图3为本实用新型的标尺结构示意图；Fig. 3 is the scale structure schematic diagram of the utility model;

图4为安装状态下本实用新型的标尺内部结构示意图；4 is a schematic diagram of the internal structure of the ruler of the present invention in an installed state;

图5为本实用新型的整体结构示意图；Fig. 5 is the overall structure schematic diagram of the present utility model;

其中，1—测量管；2—标尺；3—小球；4—输液装置；101—调压机构；1011—排气孔；1012—孔帽；102—水柱管；1021—水柱管底端；103—三通阀；1031—控制把手；104—连接管；201—管道卡槽；202—三通阀卡槽；203—刻度。Among them, 1—measuring tube; 2—ruler; 3—ball; 4—infusion device; 101—pressure regulating mechanism; 1011—vent hole; 1012—hole cap; 102—water column pipe; 1021—bottom end of water column pipe; 103—three-way valve; 1031—control handle; 104—connecting pipe; 201—pipe slot; 202—three-way valve slot; 203—scale.

具体实施方式Detailed ways

下面将结合本实用新型实施例对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

需要说明的是，在不冲突的情况下，本实用新型中的实施例及实施例中的特征可以相互组合。It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

下面结合具体实施例对本实用新型作进一步说明，但不作为本实用新型的限定。The present utility model will be further described below with reference to specific embodiments, but not as a limitation of the present utility model.

一种新型中心静脉压手工测量简易装置，包括标尺2和测量管1，标尺2可拆卸安装于测量管1的外侧，标尺2上开有刻度203，测量管1包括依次连接的调压机构101、水柱管102、三通阀103和连接管104，水柱管102为硬质水柱管，使水柱管102与标尺2之间的卡接过程更方便，水柱管102的内侧放置有小球3，水柱管底端1021呈向下收缩状，三通阀103的一侧接口为正压接口，正压接口连接有输液装置4。A novel simple device for manual measurement of central venous pressure, comprising aruler 2 and ameasuring tube 1, theruler 2 is detachably mounted on the outside of themeasuring tube 1, theruler 2 is provided with ascale 203, and themeasuring tube 1 includes apressure regulating mechanism 101 connected in sequence , thewater column pipe 102, the three-way valve 103 and the connectingpipe 104, thewater column pipe 102 is a hard water column pipe, which makes the clamping process between thewater column pipe 102 and theruler 2 more convenient. Thebottom end 1021 of the water column tube is in a downwardly contracted shape, and one side interface of the three-way valve 103 is a positive pressure interface, and the positive pressure interface is connected with the infusion device 4 .

如图1至图5所示，水柱管102内放置的小球3和水柱管底端1021向下收缩的形状设置，使水柱管102内液体下降时，小球3随着液面的降低向下运动，进入水柱管底端1021的内侧，受水柱管底端1021管径变小和小球3产生的缝隙液阻的影响，液体流速减小，减缓了患者CVP低于大气压的特殊情况时液体的放空速度，隔绝了部分空气，为操作者关闭三通阀103争取了时间，防止产生空气栓塞。As shown in FIGS. 1 to 5 , the small balls 3 placed in thewater column tube 102 and thebottom end 1021 of the water column tube are set in a downwardly contracted shape, so that when the liquid in thewater column tube 102 descends, the small balls 3 move toward It moves down and enters the inner side of thebottom end 1021 of the water column tube. Affected by the smaller diameter of thebottom end 1021 of the water column tube and the liquid resistance of the gap generated by the small ball 3, the liquid flow rate decreases, which slows down the patient’s CVP lower than the atmospheric pressure. The venting speed of the liquid isolates part of the air, buys time for the operator to close the three-way valve 103, and prevents the occurrence of air embolism.

在一些具体的扩展实施例中，三通阀103的一端接口为正压接口设计，正压接口通过内侧的螺纹连接输液装置4，避免注射器或其他输液器反复拔插导致瓶塞漏液、生理盐水及输液器污染。In some specific extended embodiments, one end interface of the three-way valve 103 is designed as a positive pressure interface, and the positive pressure interface is connected to the infusion device 4 through the inner thread, so as to avoid repeated plugging and unplugging of the syringe or other infusion device, which may cause the bottle stopper to leak fluid, cause physiological Contamination of saline and infusion sets.

在一些优选的实施例中，标尺2的内侧开有卡槽，标尺2通过卡槽卡接于测量管1的外侧，卡槽包括与水柱管102和三通阀103相适的管道卡槽201和三通阀卡槽202，管道卡槽201和三通阀卡槽202的内侧贯通连接。In some preferred embodiments, the inner side of theruler 2 is provided with a clamping groove, and theruler 2 is clamped to the outer side of the measuringtube 1 through the clamping groove, and the clamping groove includes apipe clamping groove 201 suitable for thewater column pipe 102 and the three-way valve 103 The inner side of the three-wayvalve clamping groove 202, thepipeline clamping groove 201 and the three-wayvalve clamping groove 202 are connected through.

管道卡槽201和三通阀卡槽202的设置，使标尺2能够通过卡槽与测量管1的卡接实现快速安装，且安装完成后，利用管道卡槽201对水柱管102的固定和三通阀卡槽202对三通阀103的固定，避免测量管1和标尺2之间在安装后产生相对位移，配合标尺2上的刻度203，无需其他操作即可实现了零点刻度203的对准。The setting of thepipeline clip groove 201 and the three-wayvalve clip slot 202 enables theruler 2 to be quickly installed through the clip connection between the clip slot and the measuringtube 1, and after the installation is completed, thewater column pipe 102 can be fixed and three-way by thepipeline clip slot 201. The fixing of the three-way valve 103 by the throughvalve slot 202 avoids the relative displacement between the measuringtube 1 and theruler 2 after installation. With thescale 203 on theruler 2, the alignment of the zero-point scale 203 can be realized without other operations. .

在一些优选的实施例中，三通阀103的外侧与三通阀卡槽202的接触面积占三通阀103的外侧总面积的比例为25％～35％。In some preferred embodiments, the contact area between the outside of the three-way valve 103 and the three-wayvalve clip groove 202 accounts for 25% to 35% of the total area of the outside of the three-way valve 103 .

如图4所示，三通阀103外侧与三通阀卡槽202的接触面积占总外侧面积的比例设置，使标尺2能够通过三通阀卡槽202与三通阀103卡接固定，提高三通阀卡槽202对三通阀103的卡接稳定性，三通阀103可选用球阀，则三通阀103的球面外侧与三通阀卡槽202的接触面积占整个球面的25％～35％。As shown in FIG. 4 , the ratio of the contact area between the outside of the three-way valve 103 and the three-way valve slot 202 to the total outside area is set, so that thescale 2 can be clamped and fixed with the three-way valve 103 through the three-way valve slot 202 , thereby improving the The clamping stability of the three-way valve slot 202 to the three-way valve 103, the ball valve can be selected for the three-way valve 103, and the contact area between the outer side of the spherical surface of the three-way valve 103 and the three-way valve slot 202 accounts for 25% of the entire spherical surface. 35%.

在一些优选的实施例中，调压机构101为墨菲式滴壶，墨菲式滴壶的顶端开有排气孔1011和孔帽1012。In some preferred embodiments, thepressure regulating mechanism 101 is a Murphy-type drip pot, and avent hole 1011 and ahole cap 1012 are opened at the top of the Murphy-type drip pot.

墨菲式滴壶、排气孔1011和孔帽1012的设置，是为了便于医护人员在测量时对水柱管102内的液体排气，并在输液时调压，避免输液装置4推液过快导致液体外溢。The setting of the Murphy dripping pot, theexhaust hole 1011 and thehole cap 1012 is to facilitate the medical staff to exhaust the liquid in thewater column tube 102 during measurement, and to adjust the pressure during the infusion, so as to avoid the infusion device 4 pushing the liquid too fast cause fluid spillage.

在一些具体的扩展实施例中，墨菲式滴壶的容积约5～6ml，排气孔1011为带膜排气孔。In some specific extended embodiments, the volume of the Murphy dripping pot is about 5-6 ml, and thevent hole 1011 is a membrane vent hole.

在一些优选的实施例中，小球3的直径介于水柱管102的中部管径与最底端管径之间，小球3的密度不小于1.03×10³kg/m³，即不小于生理盐水的密度。In some preferred embodiments, the diameter of the small ball 3 is between the middle pipe diameter and the bottommost pipe diameter of thewater column pipe 102, and the density of the small ball 3 is not less than 1.03×10³ kg/m³ , that is, not less than Density of saline.

如图1和图5所示，小球3的直径和密度设置，使小球3能够随着液面的下降而下降，且在小球3随着液面的下降改变自身漂浮高度的过程中，小球3的中心点高度始终低于液面高度，有利于小球3进入水柱管底端1021产生缝隙液阻。As shown in Figures 1 and 5, the diameter and density of the small balls 3 are set so that the small balls 3 can descend with the drop of the liquid level, and in the process of changing the floating height of the small balls 3 with the drop of the liquid level , the height of the center point of the small ball 3 is always lower than the height of the liquid surface, which is beneficial for the small ball 3 to enter thebottom end 1021 of the water column tube to generate a gap liquid resistance.

在一些具体的扩展实施例中，小球3的直径为4mm，小球3为具有韧性的弹性材料构件，使小球3在水柱管底端1021时能够随着输液装置4的推液向上运动，避免小球3卡在水柱管底端1021推不动造成装置损坏。In some specific extended embodiments, the diameter of the small ball 3 is 4 mm, and the small ball 3 is an elastic material member with toughness, so that the small ball 3 can move upward with the push of the infusion device 4 when it is at thebottom end 1021 of the water column tube. , to prevent the small ball 3 from being stuck at thebottom end 1021 of the water column tube and unable to be pushed, causing damage to the device.

在一些具体的扩展实施例中，水柱管底端1021呈漏斗形，水柱管底端1021斜度范围为15°～45°。In some specific extended embodiments, thebottom end 1021 of the water column tube is funnel-shaped, and the slope of thebottom end 1021 of the water column tube ranges from 15° to 45°.

水柱管底端1021的形状设置和斜度设置，是为了保证小球3进入水柱管底端1021后能够产生足够的缝隙液阻，实现The shape setting and inclination setting of thebottom end 1021 of the water column tube are to ensure that the small ball 3 can generate enough liquid resistance in the gap after entering thebottom end 1021 of the water column tube, so as to realize

在一些具体的扩展实施例中，硬质水柱管102的内壁作光滑疏水处理，长度30cm，内径5mm。In some specific extended embodiments, the inner wall of the hardwater column pipe 102 is smoothed and hydrophobic, with a length of 30 cm and an inner diameter of 5 mm.

本实用新型的工作原理及使用流程：The working principle and use process of the utility model:

第一步，将测量管1的水柱管102和三通阀103卡接进标尺2上的卡槽内，水柱管102末端处对应了标尺2上的零刻度203，患者平卧后将零刻度203平腋中线固定好标尺2，在患者体内设置好中心静脉导管，中心静脉导管一端在患者体内，另一端在体外，中心静脉导管的内侧用生理盐水封管，将通阀的一端接口连接装有生理盐水的输液装置；The first step is to snap thewater column tube 102 and the three-way valve 103 of the measuringtube 1 into the slot on theruler 2. The end of thewater column tube 102 corresponds to the zeroscale 203 on theruler 2. 203 Flat-axillary midline, fix theruler 2, and set the central venous catheter in the patient. One end of the central venous catheter is in the patient's body, and the other end is in vitro. The inner side of the central venous catheter is sealed with normal saline, and one end of the valve is connected Infusion set with normal saline;

第二步，调节三通阀103的控制把手1031朝上，使输液装置4与连接管104通道相通，隔绝水柱管102，通过输液装置4向连接管104内注入生理盐水，排出连接管104内气体，再将连接管104连接中心静脉导管，使连接后连接管104和中心静脉导管内都没有空气；In the second step, adjust the control handle 1031 of the three-way valve 103 to face upwards, make the infusion device 4 communicate with the connectingpipe 104, isolate thewater column pipe 102, inject physiological saline into the connectingpipe 104 through the infusion device 4, and discharge the connectingpipe 104 gas, and then connect the connectingpipe 104 to the central venous catheter, so that there is no air in the connectingpipe 104 and the central venous catheter after the connection;

第三步，将三通阀103的控制把手1031朝下，使输液装置4与水柱管102相通，隔绝连接管104，挤压墨菲式滴壶，关闭排气孔1011防止推液过快导致液体外溢，输液装置4缓慢推注定量的生理盐水升高水柱管102内水柱高度至接近墨菲式滴壶，打开排气孔1011，轻弹水柱管102排出水柱内气泡；In the third step, turn the control handle 1031 of the three-way valve 103 downward, connect the infusion device 4 with thewater column pipe 102, isolate the connectingpipe 104, squeeze the Murphy dripping pot, and close theexhaust hole 1011 to prevent the liquid from being pushed too fast. When the liquid overflows, the infusion device 4 slowly pushes a certain amount of normal saline to raise the height of the water column in thewater column tube 102 to be close to the Murphy dripping pot, open theair vent 1011, and flick thewater column tube 102 to discharge air bubbles in the water column;

第四步，将三通阀103的控制把手1031调至向右，使水柱管102和连接管104相通，隔绝输液装置，此时，水柱管102内的液面下降，当液面不再下降时即可进行读数测量，当遇上患者CVP低于大气压的特殊情况时，水柱管内小球在随着液面下降而进入水柱管底端1021，液体在流经小球的外侧与水柱管底端1021的内壁之间的缝隙时，受到缝隙液阻的影响，放空速度减慢，为医护人员关闭通阀争取了时间；In the fourth step, the control handle 1031 of the three-way valve 103 is adjusted to the right, so that thewater column pipe 102 and the connectingpipe 104 are communicated, and the infusion device is isolated. At this time, the liquid level in thewater column pipe 102 drops. When the CVP of the patient is lower than the atmospheric pressure, the small ball in the water column tube enters thebottom end 1021 of the water column tube as the liquid level drops, and the liquid flows through the outside of the ball and the bottom of the water column tube. When the gap between the inner walls of theend 1021 is affected by the liquid resistance of the gap, the venting speed is slowed down, which buys time for the medical staff to close the valve;

第五步，再次测量时，再从第二步到第四步开始操作，向水柱管102内注液提高液面方便读数，保证了连接管104内和水柱管底端1021没有空气，无需分离连接管104与中心静脉导管，也无需反复分离输液装置4，减少接口污染几率。The fifth step, when measuring again, start the operation from the second step to the fourth step, inject liquid into thewater column tube 102 to increase the liquid level to facilitate reading, and ensure that there is no air in the connectingtube 104 and thebottom end 1021 of the water column tube, and no separation is required. Connecting thetube 104 to the central venous catheter also eliminates the need to repeatedly separate the infusion device 4, thereby reducing the chance of interface contamination.

本实用新型结构设计简单操作方便，可一人完成测量，也可多次测量，导致患者感染、产生空气栓塞的几率大大减小，漂浮的小球3体积对水柱测量误差较小可忽略不计，为临床需要快速手工测量中心静脉压带来便利。The utility model has a simple structure design and is convenient to operate, and can be measured by one person or multiple times, which greatly reduces the probability of patient infection and air embolism. Clinical need to quickly manually measure central venous pressure to bring convenience.

其中中心静脉导管的用法为本领域内技术人员的公知常识。The usage of the central venous catheter is the common knowledge of those skilled in the art.

以上仅为本实用新型较佳的实施例，并非因此限制本实用新型的实施方式及保护范围，对于本领域技术人员而言，应当能够意识到凡运用本实用新型说明书内容所作出的等同替换和显而易见的变化所得到的方案，均应当包含在本实用新型的保护范围内。The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention. For those skilled in the art, they should be aware of the equivalent replacement and The solutions obtained by obvious changes shall all be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a novel manual simple and easy device of measuring of central venous pressure which characterized in that: including scale and survey buret, scale demountable installation in survey the outside of buret, it has the scale to open on the scale, survey buret including pressure regulating mechanism, water column pipe, three-way valve and the connecting pipe that connects gradually, the water column pipe is stereoplasm water column pipe, the bobble has been placed to the inboard of water column pipe, water column bottom of the tube end is the downward contraction form, one side interface of three-way valve is the malleation interface, the malleation interface connection has infusion set.

2. The simple device for manually measuring central venous pressure according to claim 1, wherein: the inboard of scale is opened there is the draw-in groove, the scale pass through the draw-in groove joint in survey the outside of buret, the draw-in groove include with pipeline draw-in groove and three-way valve draw-in groove that water column pipe and three-way valve suited, the inboard through connection of pipeline draw-in groove and three-way valve draw-in groove.

3. The simple device for manually measuring central venous pressure according to claim 2, wherein: the contact area between the outer side of the three-way valve and the clamping groove of the three-way valve accounts for 25-35% of the total area of the outer side of the three-way valve.

4. The simple device for manually measuring central venous pressure according to claim 1, wherein: the pressure regulating mechanism is a Murphy type drip cup, and the top end of the Murphy type drip cup is provided with an exhaust hole and a hole cap.

5. The simple device for manually measuring central venous pressure according to claim 1, wherein: the diameter of the small ball is between the middle pipe diameter and the bottommost pipe diameter of the water column pipe, and the density of the small ball is not less than 1.03 multiplied by 10³ kg/m³ 。

6. The simple device for manually measuring central venous pressure according to claim 5, wherein: the small ball is an elastic material component with toughness.

7. The simple device for manually measuring central venous pressure according to claim 1, wherein: the bottom end of the water column pipe is funnel-shaped, and the inclination range of the bottom end of the water column pipe is 15-45 degrees.

8. The simple device for manually measuring central venous pressure according to claim 1, wherein: and the inner wall of the hard water column tube is subjected to smooth hydrophobic treatment.

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